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Adam Smith
Adam Smith (baptised 16 June 1723 – died 17 July 1790 ) was a Scottish moral philosopher and a pioneer of political economics. One of the key figures of the Scottish Enlightenment, Smith is the author of The Theory of Moral Sentiments and An Inquiry into the Nature and Causes of the Wealth of Nations. The latter, usually abbreviated as The Wealth of Nations, is considered his magnum opus and the first modern work of economics. Smith is widely cited as the father of modern economics and capitalism.
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Al-Kindi
() (c. 801–873 CE), also known to the West by the Latinized version of his name Alkindus, was an Arab Iraqi polymath: an Islamic philosopher, scientist, astrologer, astronomer, cosmologist, chemist, logician, mathematician, musician, physician, physicist, psychologist, and meteorologist. Al-Kindi was the first of the Muslim Peripatetic philosophers, and is known for his efforts to introduce Greek and Hellenistic philosophy to the Arab world, and as a pioneer in chemistry, medicine, music theory, physics, psychology,the philosophy of science, and is also known for being one of the fathers of cryptography.
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Albertus Magnus
Saint Albertus Magnus, O.P. (1193/1206 – November 15, 1280), also known as Saint Albert the Great and Albert of Cologne, was a Dominican friar and bishop who achieved fame for his comprehensive knowledge of and advocacy for the peaceful coexistence of science and religion. Those such as James A. Weisheipl and Joachim R. Söder have referred to him as the greatest German philosopher and theologian of the Middle Ages, an opinion supported by contemporaries such as Roger Bacon. He was the first among medieval scholars to apply Aristotle's philosophy to Christian thought. The Catholic Church honors him as a Doctor of the Church, one of only 33 persons with that honor.
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Alexander the Great
Alexander III of Macedon (20/21 July 356 – 10/11 June 323 BC), commonly known as Alexander the Great (, Mégas Aléxandros), was a Greek king of Macedon. He is the most celebrated member of the Argead Dynasty and the creator of one of the largest empires in ancient history.
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Alfred Tarski
Alfred Tarski (January 14, 1901 – October 26, 1983) was a Polish logician and mathematician. Educated at the University of Warsaw and a member of the Lwow-Warsaw School of Logic and the Warsaw School of Mathematics and philosophy, he emigrated to the USA in 1939, and taught and carried out research in mathematics at the University of California, Berkeley, from 1942 until his death.
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Anthony Kenny
Sir Anthony John Patrick Kenny FBA (born 16 March 1931 in Liverpool) is an English philosopher whose interests lie in the philosophy of mind, ancient and scholastic philosophy, the philosophy of Wittgenstein and the philosophy of religion. With Peter Geach, he has made a significant contribution to Analytical Thomism, a movement whose aim is to present the thought of St Thomas Aquinas in the style of modern philosophy by clearing away the trappings and obscurities of traditional Thomism. He is one of the executors of Wittgenstein's literary estate. He is a former President of the British Academy and current President of the Royal Institute of Philosophy.
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Aristotle
Aristotle (, Aristotélēs) (384 BC – 322 BC) was a Greek philosopher, a student of Plato and teacher of Alexander the Great. His writings cover many subjects, including physics, metaphysics, poetry, theater, music, logic, rhetoric, politics, government, ethics, biology, and zoology. Together with Plato and Socrates (Plato's teacher), Aristotle is one of the most important founding figures in Western philosophy. Aristotle's writings were the first to create a comprehensive system of Western philosophy, encompassing morality and aesthetics, logic and science, politics and metaphysics.
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Arthur Danto
Arthur Coleman Danto (born 1924) is an American art critic, and professor of philosophy. He is best known as the influential, long-time art critic for the Nation and for his work in philosophical aesthetics and philosophy of history, though he has contributed significantly to a number of fields. His interests span thought, feeling, philosophy of art, theories of representation, philosophical psychology, Hegel's aesthetics, and the philosophers Maurice Merleau-Ponty and Arthur Schopenhauer.
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Arthur Schopenhauer
Arthur Schopenhauer (22 February 1788 – 21 September 1860) was a German philosopher known for his pessimism and philosophical clarity. At age 25, he published his doctoral dissertation, On the Fourfold Root of the Principle of Sufficient Reason, which examined the fundamental question of whether reason alone can unlock answers about the world.
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Auguste Comte
Auguste Comte (19 January 1798 – 5 September 1857) was a French philosopher, a founder of the discipline of sociology and of the doctrine of positivism. He may be regarded as the first philosopher of science in the modern sense of the term.
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Augustine
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Augustine of Hippo
: For other uses, see Augustine, Augustinus and Saint Augustine.
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Aurobindo
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Averroes
'''Abū 'l-Walīd Muḥammad bin Aḥmad bin Rushd (), better known just as Ibn Rushd (), and in European literature as Averroes''' () (1126 – December 10, 1198), was an Andalusian Muslim polymath; a master of Aristotelian philosophy, Islamic philosophy, Islamic theology, Maliki law and jurisprudence, logic, psychology, politics, Arabic music theory, and the sciences of medicine, astronomy, geography, mathematics, physics and celestial mechanics. He was born in Córdoba, Al Andalus, modern-day Spain, and died in Marrakech, modern-day Morocco. His school of philosophy is known as Averroism. He has been described by some as the founding father of secular thought in Western Europe and "one of the spiritual fathers of Europe," although other scholars oppose such claims.
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Avicenna
, known as Abū Alī Sīnā () or, more commonly, Ibn Sīnā or Pour Sina, but most commonly known in English by his Latinized name Avicenna (, Avitzianós), (c. 980 - 1037) was a polymath of PersianA) "Avicenna", in Encyclopaedia Britannica, Concise Online Version, 2006 ([http://www.britannica.com/eb/article-9011433/Avicenna]); B) D. Gutas, "Avicenna", in Encyclopaedia Iranica, Online Version 2006, ([http://www.iranica.com/articles/avicenna-xi LINK]); excerpt: "That he should have written poems in Persian, his native and everyday language, is probable" C) Ibn Sina ("Avicenna") Encyclopedia of Islam. 2nd edition. Edited by P. Berman, Th. Bianquis, C.E. Bosworth, E. van Donzel and W.P. Henrichs. Brill 2009. Accessed through Brill online: www.encislam.brill.nl (2009) Quote: "He was born in 370/980 in Afshana, his mother's home, near Bukhara. His native language was Persian." D) Charles Lindholm,"The Islamic Middle East: Tradition and Change", Wiley-Blackwell, 2002. (2nd edition) " excerpt from pg 277: "Iranian Platonic philosopher". E) Fayz, M. Getz. "Avicenna" in Sandra Clayton-Emmerson (2005), Key Figures in Medieval Europe: An Encyclopedia (Routledge Encyclopedias of the Middle Ages). Routledge. pg 54: "The Persian philosopher, poet, and physician Ibn Sina (Abu Ali al-Husayn ibn Abdullah ibn Sina) is known in the west as Avicenna. He was born in Bukhara and died in Hamada, Persia". F) Joyce Moss, " Middle Eastern literatures and their times", Volume 6 of World Literature and Its Times: Profiles of Notable Literary Works and the Historical Events that Influenced Them. Thomas Gale, 2004. Excerpt: "One of the key figures whose views came under attack was the Persian philosopher and scientist Ibn Sina(also known as Avicenna; 980-1037)"" G) David Edward Cooper, Jitendranath Mohanty, Ernest Sosa, "Epistemology: the classic readings", Wiley-Blackwell, 1999. pg 98:"by the Persian philosopher Ibn Sina (Avicenna) in the eleventh century." origin and the foremost physician and philosopher of his time. He was also an astronomer, chemist, geologist, Hafiz, Islamic psychologist, Islamic scholar, Islamic theologian, logician, paleontologist, mathematician, Maktab teacher, physicist, poet, and scientist.
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Baruch Spinoza
Baruch or Benedict de Spinoza ( Baruch Shpinoza, , ) (November 24, 1632 – February 21, 1677) was a Dutch philosopher of Portuguese Jewish origin. Revealing considerable scientific aptitude, the breadth and importance of Spinoza's work was not fully realized until years after his death. Today, he is considered one of the great rationalists of 17th-century philosophy, laying the groundwork for the 18th century Enlightenment and modern biblical criticism. By virtue of his magnum opus, the posthumous Ethics, in which he opposed Descartes mind–body dualism, Spinoza is considered to be one of Western philosophy's most important philosophers. Philosopher and historian Georg Wilhelm Friedrich Hegel said of all modern philosophers, "You are either a Spinozist or not a philosopher at all." Spinoza attended the Keter Torah yeshiva headed by Rabbi Shaul Levi Morteira, and maintained a connection with Rabbi Menasseh ben Israel, whose home was a center for Jewish scholars in Amsterdam.
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Bertrand Russell
Bertrand Arthur William Russell, 3rd Earl Russell, OM, FRS (18 May 1872 – 2 February 1970) was a British philosopher, logician, mathematician, historian, socialist, pacifist, and social critic. He spent most of his life in England; he was born in Wales where he also died, aged 97.
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Blaise Pascal
Blaise Pascal (; June 19, 1623, Clermont-Ferrand – August 19, 1662, Paris) was a French mathematician, physicist, inventor, writer and Catholic philosopher. He was a child prodigy who was educated by his father, a Tax Collector in Rouen. Pascal's earliest work was in the natural and applied sciences where he made important contributions to the study of fluids, and clarified the concepts of pressure and vacuum by generalizing the work of Evangelista Torricelli. Pascal also wrote in defense of the scientific method.
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Boethius
Anicius Manlius Severinus Boëthius, commonly called Boethius (ca. 480–524 or 525) was a Christian philosopher of the early 6th century. He was born in Rome to an ancient and important family which included emperors Petronius Maximus and Olybrius and many consuls. His father, Flavius Manlius Boethius, was consul in 487 after Odoacer deposed the last Western Roman Emperor. Boethius, of the noble Anicius lineage, entered public life at a young age and was already a senator by the age of 25.
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Bonaventure
Bonaventure (; 1221 – 15 July 1274), born John of Fidanza (), was an Italian medieval scholastic theologian and philosopher, the seventh Minister General of the Order of Friars Minor. He was a Cardinal Bishop of Albano. He was canonized on 14 April 1482 by Pope Sixtus IV and declared a Doctor of the Church in the year 1588 by Pope Sixtus V. He is known as the "Seraphic Doctor" (). Many writings believed in the Middle Ages to be his are now collected under the name Pseudo-Bonaventura.
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Bruce Kuklick
Bruce Kuklick (born March 3, 1941 in Philadelphia, Pennsylvania) is an American historian. He currently serves as the Nichols Professor of American History at the University of Pennsylvania, specializing in diplomatic and intellectual history of the United States, as well as the history of philosophy. He has written several books on these subjects, most recently Black Philosopher, White Academy: The Career of William Fontaine, which was described as "a biography of Fontaine is as good a story as that life itself."
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Buddhism
Buddhism (Pali/Sanskrit: बौद्ध धर्म Buddha Dharma) is a religion and philosophy encompassing a variety of traditions, beliefs and practices, largely based on teachings attributed to Siddhartha Gautama, commonly known as the Buddha (Pāli/Sanskrit "the awakened one"). The Buddha lived and taught in the northeastern Indian subcontinent some time between the 6th and 4th centuries BCE. He is recognized by adherents as an awakened teacher who shared his insights to help sentient beings end suffering (or dukkha), achieve nirvana, and escape what is seen as a cycle of suffering and rebirth.
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Carl von Clausewitz
Carl Philipp Gottlieb von Clausewitz (; July 1, 1780 – November 16, 1831) was a Prussian soldier and German military theorist who stressed the moral and political aspects of war. His most notable work, Vom Kriege (On War), was unfinished at his death.
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Chinese civilization
#REDIRECTChina
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Cicero
Marcus Tullius Cicero (; Classical Latin: ; January 3, 106 BC – December 7, 43 BC; sometimes anglicized as "Tully"), was a Roman philosopher, statesman, lawyer, political theorist, and Roman constitutionalist. He came from a wealthy municipal family of the equestrian order, and is widely considered one of Rome's greatest orators and prose stylists.
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Claude Lévi-Strauss
Claude Lévi-Strauss (; (28 November 1908 – 30 October 2009) was a French anthropologist and ethnologist, and has been called the "father of modern anthropology".
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Confucius
Confucius (, or ), literally "Master Kong", (traditionally September 28, 551 BC – 479 BC) was a Chinese thinker and social philosopher of the Spring and Autumn Period.
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Constantine I
Flavius Valerius Aurelius ConstantinusIn Latin Constantine is the first Christian emperor. Constantine's official imperial title was IMPERATOR CAESAR FLAVIVS CONSTANTINVS PIVS FELIX INVICTVS AVGVSTVS, Imperator Caesar Flavius Constantine Augustus, the pious, the fortunate, the undefeated. After 312, he added MAXIMVS ("the greatest"), and after 325 replaced ("undefeated") with VICTOR, as invictus reminded of Sol Invictus, the Sun God. (c. 27 February 272 – 22 May 337), commonly known as Constantine I, Constantine the Great, or Saint Constantine, was Roman Emperor from 306 to 337. Best known for being the first Christian Roman emperor, Constantine reversed the persecutions of his predecessor, Diocletian, and issued the Edict of Milan in 313, which proclaimed religious tolerance of Christians throughout the empire.
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Daniel Dennett
Daniel Clement Dennett (born March 28, 1942 in Boston) is an American philosopher and cognitive scientist whose research centers on the philosophy of mind, philosophy of science and philosophy of biology, particularly as those fields relate to evolutionary biology and cognitive science. He graduated from Harvard with a B.A in philosophy, then after completing his D.Phil at the University of Oxford. He is currently the co-director of the Center for Cognitive Studies, the Austin B. Fletcher Professor of Philosophy, and a University Professor at Tufts University. Dennett is a noted atheist and secularist, a member of the Secular Coalition for America advisory board, as well as a prominent advocate of the Brights movement.
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David Hume
David Hume (7 May 1711 [26 April O.S.] – 25 August 1776) was a Scottish philosopher and historian, regarded as one of the most important figures in the history of Western philosophy and the Scottish Enlightenment. Hume is often grouped with John Locke, George Berkeley, and a handful of others as a British Empiricist.
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David Kellogg Lewis
David Kellogg Lewis (September 28, 1941 – October 14, 2001) was a 20th-century American philosopher. Lewis taught briefly at UCLA and then at Princeton from 1970 until his death. He is also closely associated with Australia, whose philosophical community he visited almost annually for more than thirty years. He has made ground-breaking contributions in philosophy of language, philosophy of mind, metaphysics, epistemology, and philosophical logic. He is probably best known for his controversial modal realist stance: that there exist infinitely many concretely existing and causally isolated possible worlds, of which ours is just one, which are used in the analysis of necessity and possibility.
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Derek Parfit
Derek Parfit (born December 11, 1942) is a British philosopher who specializes in problems of personal identity, rationality and ethics, and the relations between them. His 1984 book, Reasons and Persons (described by Alan Ryan in The Sunday Times as "something close to a work of genius") has been very influential. He has worked at Oxford for the whole of his academic career, and is presently a Senior Research Fellow at All Souls College, Oxford. He is also a Visiting Professor of Philosophy at New York University, Harvard University, and Rutgers University. Between 1965-66 he was Harkness Fellow at Columbia University and Harvard University [http://as.nyu.edu/object/aboutas.globalprofessor.DerekParfit].
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Descartes
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Diogenes Laertius
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Duns Scotus
Blessed John (Johannes) Duns Scotus, O.F.M. (c. 1265 – 8 November 1308) was one of the more important theologians and philosophers of the High Middle Ages. He was nicknamed Doctor Subtilis for his penetrating and subtle manner of thought.
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Edmund Burke
Edmund Burke PC (12 January [NS] 1729 9 July 1797) was an Irish statesman, author, orator, political theorist, and philosopher who, after relocating to England, served for many years in the House of Commons of Great Britain as a member of the Whig party. He is mainly remembered for his support of the cause of the American Revolutionaries, and for his later opposition to the French Revolution. The latter led to his becoming the leading figure within the conservative faction of the Whig party, which he dubbed the "Old Whigs", in opposition to the pro-French-Revolution "New Whigs," led by Charles James Fox. Burke was praised by both conservatives and liberals in the nineteenth century and since the twentieth century he has generally been viewed as the philosophical founder of modern conservatism, as well as a representative of classical liberalism.
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Edmund Husserl
Edmund Gustav Albrecht Husserl (; April 8, 1859, Prostějov, Moravia, Austrian Empire – April 26, 1938, Freiburg, Germany) was a mathematician and philosopher who is deemed the founder of phenomenology. He broke with the positivist orientation of the science and philosophy of his day, believing that experience is the source of all knowledge, while at the same time he elaborated critiques of psychologism and historicism.
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Erasmus
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F. H. Bradley
Francis Herbert Bradley, OM, (30 January 1846 – 18 September 1924) was a British idealist philosopher.
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Francis Bacon
Francis Bacon, 1st Viscount Saint Alban, KC (22 January 1561 – 9 April 1626) was an English philosopher, statesman, scientist, lawyer, jurist and author. He famously died of pneumonia contracted while studying the effects of freezing on the preservation of meat. He served both as Attorney General and Lord Chancellor of England. Although his political career ended in disgrace, he remained extremely influential through his works, especially as philosophical advocate and practitioner of the scientific method and pioneer in the scientific revolution.
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Francisco Sanches
Francisco Sanches (c. 1550 – 1623) was a Portuguese philosopher and physician of Sephardi Jewish origin.
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Frederick Copleston
Frederick Charles Copleston, SJ, CBE (10 April 1907, Taunton, Somerset, England – 3 February 1994, London, England) was a Jesuit priest and historian of philosophy.
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Friedrich Engels
Friedrich Engels (; 28 November 1820 – 5 August 1895) was a German social scientist, author, political theorist, philosopher, and father of communist theory, alongside Karl Marx. Together they produced The Communist Manifesto in 1848. Engels also edited the second and third volumes of Das Kapital after Marx's death.
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Friedrich Nietzsche
Friedrich Wilhelm Nietzsche (; in English , ) (October 15, 1844 August 25, 1900) was a 19th-century German philosopher and classical philologist. He wrote critical texts on religion, morality, contemporary culture, philosophy and science, displaying a fondness for metaphor, irony and aphorism.
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G.E. Moore
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Galileo Galilei
Galileo Galilei (; 15 February 1564 – 8 January 1642) was an Italian physicist, mathematician, astronomer and philosopher who played a major role in the Scientific Revolution. His achievements include improvements to the telescope and consequent astronomical observations, and support for Copernicanism. Galileo has been called the "father of modern observational astronomy," the "father of modern physics," the "father of science," and "the Father of Modern Science." Stephen Hawking says, "Galileo, perhaps more than any other single person, was responsible for the birth of modern science."
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George Berkeley
George Berkeley ( ) (12 March 1685 14 January 1753), also known as Bishop Berkeley (Bishop of Cloyne), was an Irish philosopher whose primary achievement was the advancement of a theory he called "immaterialism" (later referred to as "subjective idealism" by others). This theory contends that individuals can only know directly sensations and ideas of objects, not abstractions such as "matter". The theory also contends that ideas are dependent upon being perceived by minds for their very existence, a belief that became immortalized in the dictum, "esse est percipi" ("to be is to be perceived"). He published his chief philosophical work A Treatise Concerning the Principles of Human Knowledge in 1710.
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George Boole
George Boole () (2 November 1815 – 8 December 1864) was an
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Gersonides
Levi ben Gershon, better known by his Latinised name as Gersonides or the abbreviation of first letters as RaLBaG (1288–1344), philosopher, Talmudist, mathematician, astronomer/astrologer. He was born at Bagnols in Languedoc, France. According to Abraham Zacuto and others, he was the son of Gerson ben Solomon Catalan.
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Giacomo Zabarella
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Gilbert of Poitiers
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Gilbert Ryle
Gilbert Ryle (19 August 1900, Brighton – 6 October 1976, Oxford), was a British philosopher, and a representative of the generation of British ordinary language philosophers that shared Wittgenstein's approach to philosophical problems, and is principally known for his critique of Cartesian dualism, for which he coined the phrase "the ghost in the machine". Some of his ideas in the philosophy of mind have been referred to as "behaviourist" (not to be confused with the psychological behaviourism of B. F. Skinner and John B. Watson). Ryle's best known book is The Concept of Mind (1949), in which he writes that the "general trend of this book will undoubtedly, and harmlessly, be stigmatised as 'behaviourist'." Ryle, having engaged in detailed study of the key works of Bernard Bolzano, Franz Brentano, Alexius Meinong, Husserl, and Heidegger, himself suggested instead that the book "could be described as a sustained essay in phenomenology, if you are at home with that label."
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Gilles Deleuze
Gilles Deleuze (), (18 January 1925 – 4 November 1995) was a French philosopher of the late 20th century. From the early 1960s until his death, Deleuze wrote many influential works on philosophy, literature, film, and fine art. His most popular books were the two volumes of Capitalism and Schizophrenia: Anti-Oedipus (1972) and A Thousand Plateaus (1980), both co-written with Félix Guattari.
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Giordano Bruno
Giordano Bruno (1548 – February 17, 1600), born Filippo Bruno, was an Italian Dominican friar, philosopher, mathematician and astronomer, who is best known as a proponent of the infinity of the universe. His cosmological theories went beyond the Copernican model in identifying the Sun as just one of an infinite number of independently moving heavenly bodies: he is the first European man to have conceptualized the universe as a continuum where the stars we see at night are identical in nature to the Sun. He was burned at the stake by authorities in 1600 after the Roman Inquisition found him guilty of heresy. After his death he gained considerable fame; in the 19th and early 20th centuries, commentators focusing on his astronomical beliefs regarded him as a martyr for free thought and modern scientific ideas. Recent assessments suggest that his ideas about the universe played a smaller role in his trial than his pantheist beliefs, which differed from the interpretations and scope of God held by Catholicism. In addition to his cosmological writings, Bruno also wrote extensive works on the art of memory, a loosely organized group of mnemonic techniques and principles. More recent assessments, beginning with the pioneering work of Frances Yates, suggest that Bruno was deeply influenced by the astronomical facts of the universe inherited from Arab astrology, Neoplatonism and Renaissance Hermeticism. Other recent studies of Bruno have focused on his qualitative approach to mathematics and his application of the spatial paradigms of geometry to language.
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Gottfried Leibniz
Gottfried Wilhelm Leibniz (sometimes von Leibniz) ( (July 1, 1646 - November 14, 1716) was a German mathematician and philosopher. He wrote primarily in Latin and French.
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Gottlob Frege
Friedrich Ludwig Gottlob Frege (8 November 1848 – 26 July 1925) was a German mathematician who became a logician and philosopher. He was one of the founders of modern logic, and made major contributions to the foundations of mathematics. As a philosopher, he is generally considered to be the father of analytic philosophy, for his writings on the philosophy of language and mathematics. Although he was mainly ignored by the intellectual world when he published his writings, it was Giuseppe Peano (1858–1932) and later Bertrand Russell (1872–1970) who helped introduce his work to later generations of logicians and philosophers.
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Hegel
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Henry Sidgwick
Henry Sidgwick (May 31, 1838–August 28, 1900) was an English utilitarian philosopher. He was one of the founders and first president of the Society for Psychical Research, a member of the Metaphysical Society, and promoted the higher education of women. His work in economics has also had a lasting influence.
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Heraclitus
Heraclitus of Ephesus (Ancient Greek: — ; c. 535–c. 475 BCE) was a pre-Socratic Greek philosopher, a native of the Greek city Ephesus, Ionia, on the coast of Asia Minor. He was of distinguished parentage. Little is known about his early life and education, but he regarded himself as self-taught and a pioneer of wisdom. From the lonely life he led, and still more from the riddling nature of his philosophy and his contempt for humankind in general, he was called "The Obscure," and the "Weeping Philosopher."
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Hilary Putnam
Hilary Whitehall Putnam (born July 31, 1926) is an American philosopher who has been a central figure in analytic philosophy since the 1960s, especially in philosophy of mind, philosophy of language, and philosophy of science. He is known for his willingness to apply an equal degree of scrutiny to his own philosophical positions as to those of others, subjecting each position to rigorous analysis until he exposes its flaws. As a result, he has acquired a reputation for frequently changing his own position. Putnam is currently Cogan University Professor Emeritus at Harvard University.
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Hugo Grotius
Hugo Grotius (10 April 1583 – 28 August 1645), also known as Huig de Groot or Hugo de Groot, worked as a jurist in the Dutch Republic. With Francisco de Vitoria and Alberico Gentili he laid the foundations for international law, based on natural law. He was also a philosopher, theologian, Christian apologist, playwright, and poet.
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Ibn al-Haytham
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Ibn Khaldun
Ibn Khaldūn or Ibn Khaldoun (full name, , , Berber name: Ben Xeldun; May 27, 1332 AD/732 AH – March 19, 1406 AD/808 AH) was a North African polymath — an astronomer, economist, historian, Islamic jurist, Islamic lawyer, Islamic scholar, Islamic theologian, hafiz, mathematician, military strategist, nutritionist, philosopher, social scientist and statesman—born in North Africa in present-day Tunisia. He is considered a forerunner of several social scientific disciplines: demography, cultural history, historiography, the philosophy of history, and sociology. He is also considered one of the forerunners of modern economics, alongside the earlier Indian scholar Chanakya. Ibn Khaldun is considered by many to be the father of a number of these disciplines, and of social sciences in general, for anticipating many elements of these disciplines centuries before they were founded in the West. He is best known for his Muqaddimah (known as Prolegomenon in English), the first volume of his book on universal history, Kitab al-Ibar. Ibn Khaldun's ideas were not absorbed by his society, nor were they carried forward by its future generations.
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Ibn Rushd
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Ibn Taimiyyah
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Immanuel Kant
Immanuel Kant () (22 April 1724 – 12 February 1804) was an 18th-century German philosopher from the Prussian city of Königsberg. Kant was the last influential philosopher of modern Europe in the classic sequence of the theory of knowledge during the Enlightenment beginning with thinkers John Locke, George Berkeley, and David Hume.
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Isaac Newton
Sir Isaac Newton FRS (4 January 1643 – 31 March 1727 ) was an English physicist, mathematician, astronomer, natural philosopher, alchemist, and theologian who is considered by many scholars and members of the general public to be one of the most influential people in human history. His 1687 publication of the Philosophiæ Naturalis Principia Mathematica (usually called the Principia) is considered to be among the most influential books in the history of science, laying the groundwork for most of classical mechanics. In this work, Newton described universal gravitation and the three laws of motion which dominated the scientific view of the physical universe for the next three centuries. Newton showed that the motions of objects on Earth and of celestial bodies are governed by the same set of natural laws by demonstrating the consistency between Kepler's laws of planetary motion and his theory of gravitation, thus removing the last doubts about heliocentrism and advancing the Scientific Revolution.
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J. M. E. McTaggart
John McTaggart (3 September 1866 – 18 January, 1925) was an idealist metaphysician. For most of his life McTaggart was a fellow and lecturer in philosophy at Trinity College, Cambridge. He was an exponent of the philosophy of Hegel and among the most notable of the British idealists.
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J.L. Austin
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Jacques Derrida
Jacques Derrida () (15 July 1930 – 8 October 2004) was a French philosopher born in Algeria. He developed the critical technique known as deconstruction, and his work has been associated both with post-structuralism and postmodern philosophy. His prolific output of more than 40 published books, together with essays and public speaking, has had a significant impact upon the humanities, particularly on literary theory and continental philosophy. His best known assertion with regard to his methodology is that "there is no outside-the-text."
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Jacques Lacan
Jacques Marie Émile Lacan () (April 13, 1901 – September 9, 1981) was a French psychoanalyst and psychiatrist who made prominent contributions to psychoanalysis, philosophy, and literary theory. Giving yearly seminars in Paris from 1953 to 1981, Lacan influenced France's intellectuals in the 1960s and the 1970s, especially the post-structuralist philosophers. His interdisciplinary work is Freudian, featuring the unconscious, the castration complex, the ego, identification, and language as subjective perception. His ideas have had a significant impact on critical theory, literary theory, twentieth-century French philosophy, sociology, feminist theory and clinical psychoanalysis (though not on clinical psychology).
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Jacques-Louis David
Jacques-Louis David (30 August 1748 – 29 December 1825) was a highly influential French painter in the Neoclassical style, considered to be the preeminent painter of the era. In the 1780s his cerebral brand of history painting marked a change in taste away from Rococo frivolity toward a classical austerity and severity, heightened feeling chiming with the moral climate of the final years of the ancien régime.
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Jean Bodin
Jean Bodin (1530–1596), born in Angers, was a French jurist and political philosopher, member of the Parlement of Paris and professor of law in Toulouse. He is best known for his theory of sovereignty (see Divine Right of Kings).
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Jean d'Alembert
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Jean-Paul Sartre
Jean-Paul Charles Aymard Sartre (, ; 21 June 1905 – 15 April 1980) was a French existentialist philosopher, playwright, novelist, screenwriter, political activist, biographer, and literary critic. He was one of the leading figures in 20th century French philosophy, existentialism, and Marxism, and his work continues to influence fields such as Marxist philosophy, sociology, and literary studies. Sartre was also noted for his long relationship with the author and social theorist, Simone de Beauvoir. He was awarded the 1964 Nobel Prize in Literature but refused the honour.
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Jeremy Bentham
Jeremy Bentham ( or ; 15 February 1748 – 6 June 1832) was an English jurist, philosopher, and legal and social reformer. He became a leading theorist in Anglo-American philosophy of law and a political radical whose ideas influenced the development of welfarism. He is best known for his advocacy of utilitarianism and the ethical treatment of animals, and the idea of the panopticon.
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John Dewey
John Dewey (October 20, 1859 – June 1, 1952) was an American philosopher, psychologist and educational reformer whose ideas have been influential in education and social reform. Dewey, along with Charles Sanders Peirce and William James, is recognized as one of the founders of the philosophy of pragmatism and of functional psychology. He was a major representative of the progressive and progressive populist philosophies of schooling during the first half of the 20th century in the USA.
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John Lachs
John Lachs is the Centennial Professor of Philosophy at Vanderbilt University, where he has taught since 1967. Lachs received his Ph.D. from Yale University in 1961. His primary focus is on American philosophy (he has written a book and several articles on George Santayana) and German idealism.
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John Locke
John Locke (; 29 August 1632 – 28 October 1704), widely known as the Father of Liberalism, was an English philosopher and physician regarded as one of the most influential of Enlightenment thinkers. Considered one of the first of the British empiricists, following the tradition of Francis Bacon, he is equally important to social contract theory. His work had a great impact upon the development of epistemology and political philosophy. His writings influenced Voltaire and Rousseau, many Scottish Enlightenment thinkers, as well as the American revolutionaries. His contributions to classical republicanism and liberal theory are reflected in the American Declaration of Independence.
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John Martin Fischer
John Martin Fischer is currently a distinguished professor of philosophy at the University of California Riverside.
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John of St. Thomas
John of St. Thomas, (family name João Poinsot or Johannes Poinsot, since 1980s in American texts also John Poinsot), theologian, born at Lisbon, 9 June 1589; died at Fraga, Spain, 17 June 1644.
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John Rawls
John Bordley Rawls (February 21, 1921 – November 24, 2002) was an American philosopher and a leading figure in moral and political philosophy. He held the James Bryant Conant University Professorship at Harvard. His magnum opus, A Theory of Justice (1971), is now regarded as "one of the primary texts in political philosophy." His work in political philosophy, dubbed Rawlsianism, takes as its starting point the argument that "most reasonable principles of justice are those everyone would accept and agree to from a fair position." Rawls employs a number of thought experiments—including the famous veil of ignorance—to determine what constitutes a fair agreement in which "everyone is impartially situated as equals," in order to determine principles of social justice. He is one of the major thinkers in the tradition of liberal political philosophy.
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John Searle
John Rogers Searle (born July 31, 1932 in Denver, Colorado) is an American philosopher and currently the Slusser Professor of Philosophy at the University of California, Berkeley. Searle began his college education at the University of Wisconsin-Madison, and subsequently became a Rhodes Scholar at Oxford University where he earned an undergraduate degree and a doctorate in philosophy and ethics. Widely noted for his contributions to the philosophy of language, philosophy of mind and social philosophy, he began teaching at Berkeley in 1959, where, among his many distinctions, he was the first tenured professor to join the Free Speech Movement. He received the Jean Nicod Prize in 2000, and the National Humanities Medal in 2004.
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John Stuart Mill
John Stuart Mill (20 May 1806 – 8 May 1873) was a British philosopher and civil servant. An influential contributor to social theory, political theory, and political economy, his conception of liberty justified the freedom of the individual in opposition to unlimited state control. He was a proponent of utilitarianism, an ethical theory developed by Jeremy Bentham, although his conception of it was very different from Bentham's. Hoping to remedy the problems found in an inductive approach to science, such as confirmation bias, he clearly set forth the premises of falsification as the key component in the scientific method. Mill was also a Member of Parliament and an important figure in liberal political philosophy.
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Kant
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Karl Jaspers
Karl Theodor Jaspers (February 23, 1883 – February 26, 1969) was a German psychiatrist and philosopher who had a strong influence on modern theology, psychiatry and philosophy. After being trained in and practicing psychiatry, Jaspers turned to philosophical inquiry and attempted to discover an innovative philosophical system. He was often viewed as a major exponent of existentialism in Germany, though he did not accept this label.
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Karl Marx
Karl Heinrich Marx (May 5, 1818 – March 14, 1883) was a German philosopher, political economist, historian, political theorist, sociologist, communist, and revolutionary, whose ideas played a significant role in the development of modern communism and socialism. Marx summarized his approach in the first line of chapter one of The Communist Manifesto, published in 1848: "The history of all hitherto existing society is the history of class struggles."
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Kwame Anthony Appiah
Kwame Anthony Appiah (born 1954 in London) is a Ghanaian philosopher, cultural theorist, and novelist whose interests include political and moral theory, the philosophy of language and mind, and African intellectual history. He is currently the Laurance S. Rockefeller University Professor of Philosophy at the Princeton University.
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Leibniz
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Lev Shestov
Lev Isaakovich Shestov (), born Yehuda Leyb Schwarzmann (), was a Ukrainian/Russian existentialist philosopher. Born in Kiev (Russian Empire) on , he emigrated to France in 1921, fleeing from the aftermath of the October Revolution. He lived in Paris until his death on November 19, 1938.
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Luciano Floridi
Luciano Floridi (Laurea, Università degli Studi di Roma La Sapienza, MPhil. and PhD University of Warwick, MA University of Oxford) currently holds the Research Chair in philosophy of information and the UNESCO Chair in Information and Computer Ethics, both at the University of Hertfordshire, Department of Philosophy. He is also Fellow by Special Election of St Cross College, Oxford University, Senior Member of the Faculty of Philosophy and [http://web.comlab.ox.ac.uk/people/Luciano.Floridi/ Research Associate and Fellow in Information Policy] at OUCL (the Department of Computer Science), University of Oxford. He is best known for his work on two areas of philosophical research: the philosophy of information and information ethics.
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Ludwig Wittgenstein
Ludwig Josef Johann Wittgenstein (; 26 April 1889 – 29 April 1951) was an Austrian philosopher who held the professorship of philosophy at the University of Cambridge from 1939 until 1947.
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Mahatma Gandhi
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Maimonides
Moses Maimonides, also known as Rambam, was the preeminent medieval Jewish philosopher and one of the greatest Torah scholars of the Middle Ages. He was born in Córdoba, Spain on Passover Eve, 1135, and died in Egypt on 20th Tevet, December 12, 1204. He was as a rabbi, physician and philosopher in Morocco and Egypt.
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Manicheism
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Marsilio Ficino
Marsilio Ficino (Latin name: Marsilius Ficinus) (October 19, 1433 – October 1, 1499) was one of the most influential humanist philosophers of the early Italian Renaissance, an astrologer, a reviver of Neoplatonism who was in touch with every major academic thinker and writer of his day, and the first translator of Plato's complete extant works into Latin. His Florentine Academy, an attempt to revive Plato's school, had enormous influence on the direction and tenor of the Italian Renaissance and the development of European philosophy.
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Martin Buber
Martin Buber (; February 8, 1878 – June 13, 1965) was an Austrian-born Jewish philosopher best known for his philosophy of dialogue, a form of religious existentialism centered on the distinction between the I-Thou relationship and the I-It relationship.
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Martin Heidegger
Martin Heidegger (September 26, 1889 – May 26, 1976; ) was an influential German philosopher known for his existential and phenomenological explorations of the "question of Being." His best-known book, Being and Time, is considered to be one of the most important philosophical works of the 20th century. Heidegger has been influential beyond philosophy, in literature, psychology, and artificial intelligence.
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Mazdakism
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Michael Bratman
Michael E Bratman (born 25 July 1945) is Durfee Professor in the School of Humanities & Sciences and Professor of Philosophy at Stanford University. His interests include philosophy of action and moral philosophy. His work in those areas led him to the Belief-Desire-Intention model that is used in many areas, including artificial intelligence, today.
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Michael Dummett
Sir Michael Anthony Eardley Dummett FBA D.Litt (born 1925) is a leading British philosopher. He has both written on the history of analytic philosophy, and made original contributions to the subject, particularly in the areas of philosophy of mathematics, philosophy of logic, philosophy of language and metaphysics. He also devised the Quota Borda system of proportional voting, based on the Borda count, and has written scholarly works on tarot. Other interests have been immigration law and English grammar and usage. In 1944 he was received into the Roman Catholic Church, and remains a practising Catholic.
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Michel de Montaigne
Michel Eyquem de Montaigne () (February 28, 1533 – September 13, 1592) is one of the most influential writers of the French Renaissance, known for popularising the essay as a literary genre and is popularly thought of as the father of Modern Skepticism. He became famous for his effortless ability to merge serious intellectual speculation with casual anecdotes and autobiography—and his massive volume Essais (translated literally as "Attempts") contains, to this day, some of the most widely influential essays ever written. Montaigne had a direct influence on writers the world over, including René Descartes, Blaise Pascal, Jean-Jacques Rousseau, Ralph Waldo Emerson, Friedrich Nietzsche, Stefan Zweig, Eric Hoffer, Isaac Asimov, and perhaps William Shakespeare (see section "Related Writers and Influence" below).
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Michel Foucault
Michel Foucault (), born Paul-Michel Foucault (15 October 1926 – 25 June 1984), was a French philosopher, sociologist, and historian. He held a chair at the prestigious Collège de France with the title "History of Systems of Thought," and also taught at the University at Buffalo and the University of California, Berkeley.
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Montaigne
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Montesquieu
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Nelson Goodman
Henry Nelson Goodman (7 August 1906, Somerville, Massachusetts – 25 November 1998, Needham, Massachusetts) was an American philosopher, known for his work on counterfactuals, mereology, the problem of induction, irrealism and aesthetics.
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Niccolò Machiavelli
Niccolò di Bernardo dei Machiavelli (3 May 1469 – 21 June 1527) was an Italian philosopher and writer based in Florence during the Renaissance. He is one of the main founders of modern political science. He was a diplomat, political philosopher, musician, and a playwright, but foremost, he was a civil servant of the Florentine Republic. In June of 1498, after the ouster and execution of Girolamo Savonarola, the Great Council elected Machiavelli as Secretary to the Second of the Republic of Florence.
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Nicholas Berdyaev
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Nicholas Copernicus
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Nicholas of Cusa
Nicholas of Kues (1401 – August 11, 1464), also referred to as Nicolaus Cusanus and Nicholas of Cusa, was a cardinal of the Catholic Church from Germany (Holy Roman Empire), a philosopher, theologian, jurist, mathematician, and an astronomer. He is widely considered one of the great geniuses and polymaths of the 15th century. He is today recognized for significant spiritual, scientific and political contributions in European history, notable examples of which include his mystical or spiritual writings on 'learned ignorance' (and mathematical ideas expressed in related essays), as well as his participation in power struggles between Rome and the German states of the Holy Roman Empire.
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Nicolas of Cusa
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Parmenides
Parmenides of Elea (Greek: ; fl. early 5th century BCE) was an ancient Greek philosopher born in Elea, a Greek city on the southern coast of Italy. He was the founder of the Eleatic school of philosophy. The single known work of Parmenides is a poem which has survived only in fragmentary form. In this poem, Parmenides describes two views of reality. In The Way of Truth (a part of the poem), he explains how reality is one, change is impossible, and existence is timeless, uniform, and unchanging. In The Way of Opinion, he explains the world of appearances, which is false and deceitful. These thoughts strongly influenced Plato, and through him, the whole of Western philosophy.
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Peter Abelard
Peter Abelard (Latin: Petrus Abaelardus or Abailard; French: Pierre Abélard) (1079 – April 21, 1142) was a medieval French scholastic philosopher, theologian and preeminent logician. The story of his affair with and love for Héloïse has become legendary. The Chambers Biographical Dictionary describes him as "the keenest thinker and boldest theologian of the 12th Century".
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Peter van Inwagen
Peter van Inwagen (born September 21, 1942, United States) is an American analytic philosopher and the John Cardinal O'Hara Professor of Philosophy at the University of Notre Dame. He previously taught at Syracuse University and earned his PhD from the University of Rochester under the direction of Richard Taylor and Keith Lehrer. Van Inwagen is one of the leading figures in contemporary metaphysics, philosophy of religion, and philosophy of action.
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Petrarch
Francesco Petrarca (July 20, 1304 – July 19, 1374), known in English as Petrarch, was an Italian scholar, poet and one of the earliest Renaissance humanists. Petrarch is often called the "Father of Humanism". In the 16th century, Pietro Bembo created the model for the modern Italian language based on Petrarch's works, as well as those of Giovanni Boccaccio and, especially, Dante Alighieri. This would be later endorsed by the Accademia della Crusca. His sonnets were admired and imitated throughout Europe during the Renaissance and became a model for lyrical poetry. Petrarch was also known for being one of the first people to refer to the Dark Ages.
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Philippa Foot
Philippa Ruth Foot (née Bosanquet; October 3, 1920 – October 3, 2010) was a British philosopher, most notable for her works in ethics. She was one of the founders of contemporary virtue ethics. Her work, especially in her later career, marked a significant change in view from her work in the 1950s and 1960s, and may be seen as an attempt to modernize Aristotelian ethical theory, to show that it is adaptable to a contemporary world view, and thus, that it could compete with such popular theories as modern deontological and utilitarian ethics. Some of her work was crucial in the re-emergence of normative ethics within analytic philosophy, especially her critique of consequentialism. A familiar example is the continuing discussion of an example of hers referred to as the trolley problem. Foot's approach was influenced by the later work of Wittgenstein, although she rarely dealt explicitly with materials treated by him.
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Pierre Bayle
Pierre Bayle (18 November 1647 – 28 December 1706) was a French philosopher and writer best known for his seminal work the Historical and Critical Dictionary, published beginning in 1695.
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Pierre Gassendi
Pierre Gassendi (January 22, 1592 – October 24, 1655) was a French philosopher, priest, scientist, astronomer, and mathematician. With a church position in south-east France, he also spent much time in Paris, where he was a leader of a group of free-thinking intellectuals. He was also an active observational scientist, publishing the first data on the transit of Mercury in 1631. The lunar crater Gassendi is named after him.
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Pietro Pomponazzi
Pietro Pomponazzi (16 September 1462 – 18 May 1525) was an Italian philosopher. He is sometimes known by his Latin name, Petrus Pomponatius.
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Plato
:For other uses, see Plato (disambiguation) and Platon (disambiguation).
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Pyrrho
Pyrrho (ca. 360 BC - ca. 270 BC), a Greek philosopher of classical antiquity, is credited as being the first Skeptic philosopher, and the inspiration for the school known as Pyrrhonism founded by Aenesidemus in the 1st century BC.
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Pythagoras
Pythagoras of Samos (, O Pythagoras o Samios, "Pythagoras the Samian", or simply ; c. 570-c. 495 BC) was an Ionian Greek philosopher and founder of the religious movement called Pythagoreanism. Most of our information about Pythagoras was written down centuries after he lived, thus very little reliable information is known about him. He was born on the island of Samos, and may have travelled widely in his youth, visiting Egypt and other places seeking knowledge. Around 530 BC, he moved to Croton, a Greek colony in southern Italy, and there set up a religious sect. His followers pursued the religious rites and practices developed by Pythagoras, and studied his philosophical theories. The society took an active role in the politics of Croton, but this eventually led to their downfall. The Pythagorean meeting-places were burned, and Pythagoras was forced to flee the city. He is said to have ended his days in Metapontum.
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Raffaello Sanzio
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Rene Descartes
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Richard Rorty
Richard McKay Rorty (October 4, 1931 – June 8, 2007) was an American philosopher. He had a long and diverse academic career, including positions as Stuart Professor of Philosophy at Princeton, Kenan Professor of Humanities at the University of Virginia, and Professor of Comparative Literature at Stanford University. His complex intellectual background gave him a comprehensive and nuanced understanding of the analytic tradition in philosophy he would later famously reject. The philosophical program he developed included a rejection of a representationalist account of knowledge, a concept he referred to as a "mirror of nature," which he saw as a holdover from Platonism and pervasive throughout the history of philosophy. In response to this tradition, which he saw embodied by analytic philosophy, Rorty developed a novel form of pragmatism in which scientific and philosophical methods are merely contingent "vocabularies" which are abandoned or adopted over time according to social conventions and usefulness. Abandoning the representationalist account of knowledge, Rorty believed, would lead to a state of mind he referred to as "ironism", in which people are completely aware of the contingency of their placement in history and of their vocabulary. For Rorty, this brand of philosophy is always tied to the notion of "social hope," that without the ideas of representation and other concepts standing in the way between the mind and the world, human society would be more free. Much of his work explicates what a "postmetaphysical" culture that has abandoned representationalist epistemology would look like, incorporating a pragmatist naturalism that treats science as a tool towards liberalism. His best known book is Philosophy and the Mirror of Nature (1979).
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Richard Tarnas
Richard Theodore Tarnas, Jr. (born February 21, 1950) is a philosopher and cultural historian known for his 1991 book The Passion of the Western Mind: Understanding the Ideas That Have Shaped Our World View and Cosmos and Psyche: Intimations of a New World View, published in 2006. Tarnas is professor of philosophy and psychology at the California Institute of Integral Studies, and is the founding director of its graduate program in Philosophy, Cosmology, and Consciousness.
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Robert Nozick
Robert Nozick (November 16, 1938 – January 23, 2002) was an American political philosopher, most prominent in the 1970s and 1980s. He was a professor at Harvard University. He is best known for his book Anarchy, State, and Utopia (1974), a libertarian answer to John Rawls's A Theory of Justice (1971). His other work involved decision theory and epistemology.
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Roger Bacon
Roger Bacon, O.F.M. (c. 1214–1294), also known as Doctor Mirabilis (Latin: "wonderful teacher"), was an English philosopher and Franciscan friar who placed considerable emphasis on empirical methods. He is sometimes credited as one of the earliest European advocates of the modern scientific method inspired by the works of Plato and Aristotle.
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Roger Scruton
Roger Vernon Scruton (born 27 February 1944) is an English philosopher, writer, and composer. He is the author of a number of books on philosophy, aesthetics, and animal rights, including Art and Imagination (1974), Kant (1983), Animal Rights and Wrongs (1996), England: an Elegy (2000), and A Political Philosophy: Arguments For Conservatism (2006). He has also written several novels and two operas.
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Rosalind Hursthouse
Rosalind Hursthouse is a moral philosopher noted for her work on virtue ethics. Hursthouse is Professor of Philosophy at the University of Auckland, New Zealand. Formerly, she has taught at the Open University in the United Kingdom, at the University of California at Los Angeles in the United States, and elsewhere. She received the M.A. degree from Auckland and she received the D.Phil. from Oxford University, having studied with Elizabeth Anscombe and Philippa Foot. She is a friend of Jeffrey Masson.
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Saul Kripke
Saul Aaron Kripke (born November 13, 1940) is an American philosopher and logician. He is a professor emeritus at Princeton and teaches as a Distinguished Professor of Philosophy at CUNY Graduate Center. Since the 1960s Kripke has been a central figure in a number of fields related to mathematical logic, philosophy of language, philosophy of mathematics, metaphysics, epistemology, and set theory. Much of his work remains unpublished or exists only as tape-recordings and privately circulated manuscripts (see "Unpublished Manuscripts and Online Lectures" below). Kripke was the recipient of the 2001 Schock Prize in Logic and Philosophy. A recent poll conducted among philosophers ranked Kripke among the top ten most important philosophers of the past 200 years.
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Scott Soames
Scott Soames (born 1946) is a professor of philosophy at the University of Southern California. He specializes in the philosophy of language and the history of analytic philosophy. He is well known for defending and expanding on the program in the philosophy of language started by Saul Kripke as well as being a major critic of two-dimensionalist theories of meaning.
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Sigmund Freud
Sigmund Freud (), born Sigismund Schlomo Freud (6 May 1856 – 23 September 1939), was an Austrian neurologist who founded the psychoanalytic school of psychiatry. Freud is best known for his theories of the unconscious mind and the defense mechanism of repression, and for creating the clinical practice of psychoanalysis for treating psychopathology through dialogue between a patient, technically referred to as an "analysand", and a psychoanalyst. Freud is also renowned for his redefinition of sexual desire as the primary motivational energy of human life, as well as for his therapeutic techniques, including the use of free association, his theory of transference in the therapeutic relationship, and the interpretation of dreams as sources of insight into unconscious desires. He was an early neurological researcher into cerebral palsy, and a prolific essayist, drawing on psychoanalysis to contribute to the history, interpretation and critique of culture.
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Simone de Beauvoir
: "La Beauvoir" redirects here; also see: Beauvoir (disambiguation).
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Socrates
Socrates (Greek: , , Sōkrátēs; c. 469 BC–399 BC, in English ) was a Classical Greek Athenian philosopher. Credited as one of the founders of Western philosophy, he is an enigmatic figure known chiefly through the accounts of later classical writers, especially the writings of his students Plato and Xenophon, and the plays of his contemporary Aristophanes. Many would claim that Plato's dialogues are the most comprehensive accounts of Socrates to survive from antiquity.
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Spinoza
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Sun Tzu
Sun Wu (), style name Changqing (長卿), better known as Sun Tzu or Sunzi (; pronounced ), was an ancient Chinese military general, strategist and philosopher who is traditionally believed and most likely to have authored The Art of War, an influential ancient Chinese book on military strategy. Sun Tzu has had a significant impact on Chinese and Asian history and culture, both as an author of The Art of War and through legend. During the 19th and 20th centuries, Sun Tzu's The Art of War grew in popularity and saw practical use in Western society, and his work has continued to influence both Asian and Western culture and politics.
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Susan Haack
Susan Haack (born 1945, England) is an English professor of philosophy and law at the University of Miami in the United States. She has written on logic, the philosophy of language, epistemology, and metaphysics. Her pragmatism follows that of Charles Sanders Peirce.
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Søren Kierkegaard
Søren Aabye Kierkegaard ( or ; ) (5 May 1813 – 11 November 1855) was a deeply religious Danish Theologian who took an interest in the new culture developing in the first half of the nineteenth century. The Age of Reason had replaced the age of faith established by the Holy Roman Empire. Kierkegaard devoted his life to the affirmation of the Lutheran faith against Reason and all forms of speculation in the realm of Christianity. In 1842 he heard every philosopher say, "Everything must be doubted," so he began doubting everything until he heard the philosphers say, "One must not waste time on doubting, but must just begin straight away on philosophy." He had been brought up to believe that "even an ordinary person endeavors to do what he says, though it may happen that he does something else through ignorance, because he does not understand himself. Yet this cannot happen with the philosopher." Four years later he wrote, "it should immediately be borne in mind that the issue is not about the truth of Christianity but about the individual’s relation to Christianity, consequently not about the indifferent individual’s systematic eagerness to arrange the truths of Christianity in paragraphs but rather about the concern of the infinitely interested individual with regard to his own relation to such a doctrine".
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T. H. Green
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Thales
Thales of Miletus (; , Thalēs; 624 BC – c. 546 BC) was a pre-Socratic Greek philosopher from Miletus in Asia Minor, and one of the Seven Sages of Greece. Many, most notably Aristotle, regard him as the first philosopher in the Greek tradition. According to Bertrand Russell, "Western philosophy begins with Thales." Thales attempted to explain natural phenomena without reference to mythology and was tremendously influential in this respect. Almost all of the other pre-Socratic philosophers follow him in attempting to provide an explanation of ultimate substance, change, and the existence of the world—without reference to mythology. Those philosophers were also influential, and eventually Thales' rejection of mythological explanations became an essential idea for the scientific revolution. He was also the first to define general principles and set forth hypotheses, and as a result has been dubbed the "Father of Science".
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Thomas Hobbes
Thomas Hobbes (5 April 1588 – 4 December 1679), in some older texts Thomas Hobbs of Malmsbury, was an English philosopher, remembered today for his work on political philosophy. His 1651 book Leviathan established the foundation for most of Western political philosophy from the perspective of social contract theory.
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Thomas More
Sir Thomas More (; February 7, 1478July 6, 1535), also Saint Thomas More, was an English lawyer, social philosopher, author, statesman and noted Renaissance humanist. He was an important counsellor to Henry VIII of England and for three years toward the end of his life he was Lord Chancellor. He is also recognized as a saint within the Catholic Church and in the Anglican Communion. He was an opponent of the Protestant Reformation and of Martin Luther and William Tyndale.
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Thomas Nagel
Thomas Nagel (born July 4, 1937 in Belgrade, in present-day Serbia) is an American philosopher, currently University Professor of Philosophy and Law at New York University, where he has taught since 1980. His main areas of philosophical interest are philosophy of mind, political philosophy and ethics. He is well-known for his critique of reductionist accounts of the mind in his essay "What Is it Like to Be a Bat?" (1974), and for his contributions to deontological and liberal moral and political theory in The Possibility of Altruism (1970) and subsequent writings.
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Thomas Reid
Thomas Reid (7 May (26 April O.S.) 1710 – 7 October 1796), Scottish philosopher, and a contemporary of David Hume, was the founder of the Scottish School of Common Sense, and played an integral role in the Scottish Enlightenment. The early part of his life was spent in Aberdeen, Scotland, where he created the'' 'Wise Club' ''(a literary-philosophical association) and graduated from the University of Aberdeen. He was given a professorship at King's College, Aberdeen in 1752, where he wrote An Inquiry Into the Human Mind on the Principles of Common Sense (published in 1764). Shortly afterward he was given the prestigious Professorship of Moral Philosophy at the University of Glasgow when he was called to replace Adam Smith. He resigned from this position in 1781.
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Timothy Williamson
Timothy Williamson (born Uppsala, Sweden, 6 August 1955) is a distinguished British philosopher whose main research interests are in philosophical logic, philosophy of language, epistemology and metaphysics.
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W. V. O. Quine
http://wn.com/W_V_O_Quine -
W.V.O. Quine
http://wn.com/WVO_Quine -
William James
:This article is about the American psychologist and philosopher. For other people named William James see William James (disambiguation)
http://wn.com/William_James -
William of Ockham
William of Ockham (also Occam, Hockham, or any of several other spellings, ) (c. 1288 – c. 1348) was an English Franciscan friar and scholastic philosopher, who is believed to have been born in Ockham, a small village in Surrey. He is considered to be one of the major figures of medieval thought and was at the centre of the major intellectual and political controversies of the fourteenth century. Although he is commonly known for Occam's razor, the methodological principle that bears his name, William of Ockham also produced significant works on logic, physics, and theology. In the Church of England, his day of commemoration is 10 April.
http://wn.com/William_of_Ockham -
Wing-tsit Chan
Professor Wing-tsit Chan (陈荣捷)(August 18, 1901 - August 12, 1994) was one of the world's leading scholars of Chinese philosophy and religion, active in the United States.
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Zarathustra
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Zeno of Elea
Zeno of Elea (, ) (ca. 490 BC? – ca. 430 BC?) was a pre-Socratic Greek philosopher of southern Italy and a member of the Eleatic School founded by Parmenides. Aristotle called him the inventor of the dialectic. He is best known for his paradoxes, which Bertrand Russell has described as "immeasurably subtle and profound".
http://wn.com/Zeno_of_Elea
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#REDIRECTChina
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The United States of America (also referred to as the United States, the U.S., the USA, or America) is a federal constitutional republic comprising fifty states and a federal district. The country is situated mostly in central North America, where its forty-eight contiguous states and Washington, D.C., the capital district, lie between the Pacific and Atlantic Oceans, bordered by Canada to the north and Mexico to the south. The state of Alaska is in the northwest of the continent, with Canada to the east and Russia to the west across the Bering Strait. The state of Hawaii is an archipelago in the mid-Pacific. The country also possesses several territories in the Caribbean and Pacific.
http://wn.com/United_States
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Philosopher
Releases by year: 2004 |
Releases by album:
Thoughts |
Album releases
Thoughts
(Released 2004)
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Seven Hundred Steps of Deeper Slumber
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Awakening Senses
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Beyond Darkness
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Elysia
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What Dwells Beyond
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Wounds
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Nephren Kah
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47° 9′ S, 126° 43′ W
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Dreamside
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World in Rapture
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I Am Providence




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- A Theory of Justice
- A.C. Grayling
- Abrahamic religion
- Adam Smith
- Aesthetics
- Age of Enlightenment
- agnostic
- Al-Farabi
- Al-Ghazali
- Al-Kindi
- Alasdair MacIntyre
- Albertus Magnus
- Alexander the Great
- Alfred Tarski
- American philosophy
- analytic philosophy
- ancient philosophy
- animal rights
- Anselm of Canterbury
- Anthony Kenny
- anthropology
- applied ethics
- aretaic turn
- Aristotle
- Aristotle's ethics
- Arthur Danto
- Arthur Schopenhauer
- Asian Values
- astrology
- ataraxia
- Auguste Comte
- Augustine
- Augustine of Hippo
- Aurobindo
- Averroes
- Averroism
- Avicenna
- Babylonia
- Baruch Spinoza
- Being and Time
- belief
- Bernard Williams
- Bertrand Russell
- Blaise Pascal
- Boethius
- Bonaventure
- Brill Publishers
- British idealism
- Bruce Kuklick
- Buddhism
- Buddhism in Nepal
- Buddhist philosophy
- Bushido
- C. I. Lewis
- Carl von Clausewitz
- Chanakya
- Chinese civilization
- Chinese philosophy
- Christian
- Christianity
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Branches of philosophy
The following branches are the main areas of study:
Philosophy has expanded to include specialized branches of thought:
Many academic disciplines also have philosophical foundations. These include history, logic, law, and mathematics. In addition, a range of disciplines have emerged to address areas that historically were the subjects of philosophy. These include anthropology,psychology, and physics.
History
Many societies have considered philosophical questions and built philosophical traditions based upon each other's works.Eastern philosophy is organized by the chronological periods of each region. Historians of western philosophy usually divide the subject into three or more periods, the most important being ancient philosophy, medieval philosophy, and modern philosophy.
Ancient philosophy
Babylonian
The origins of Babylonian philosophy can be traced back to the wisdom of early Mesopotamia, which embodied certain philosophies of life, particularly ethics, in the forms of dialectic, dialogues, epic poetry, folklore, hymns, lyrics, prose, and proverbs. The reasoning and rationality of the Babylonians developed beyond empirical observation. The Babylonian text Dialog of Pessimism contains similarities to the agnostic thought of the sophists, the Heraclitean doctrine of contrasts, and the dialogues of Plato, as well as a precursor to the maieutic Socratic method of Socrates and Plato. The Milesian philosopher Thales is also traditionally said to have studied philosophy in Mesopotamia.
Ancient Chinese
Philosophy has had a tremendous effect on Chinese civilization, and East Asia as a whole. Many of the great philosophical schools were formulated during the Spring and Autumn Period and Warring States Period, and came to be known as the Hundred Schools of Thought, which consisted of Confucianism, Taoism, Mohism, Legalism, Agrarianism, School of Naturalists, and the Logicians. Similarly to Western philosophy, Chinese philosophy also covers a broad and complex range of thought, possessing a multitude of schools that address every branch and subject area of philosophy.
Ancient Graeco-Roman
Ancient Graeco-Roman philosophy is a period of Western philosophy, starting in the 6th century [c. 585] BC to the 6th century AD. It is usually divided into three periods: the pre-Socratic period, the period of Plato and Aristotle, and the post-Aristotelian (or Hellenistic) period. A fourth period that is sometimes added includes the Neoplatonic and Christian philosophers of Late Antiquity. The most important of the ancient philosophers (in terms of subsequent influence) are Plato and Aristotle.The main subjects of ancient philosophy are: understanding the fundamental causes and principles of the universe; explaining it in an economical way; the epistemological problem of reconciling the diversity and change of the natural universe, with the possibility of obtaining fixed and certain knowledge about it; questions about things that cannot be perceived by the senses, such as numbers, elements, universals, and gods. Socrates is said to have been the initiator of more focused study upon the human things including the analysis of patterns of reasoning and argument and the nature of the good life and the importance of understanding and knowledge in order to pursue it; the explication of the concept of justice, and its relation to various political systems.
In this period the crucial features of the philosophical method were established: a critical approach to received or established views, and the appeal to reason and argumentation.
Ancient Indian
The term Indian philosophy (Sanskrit: Darshanas), may refer to any of several traditions of philosophical thought that originated in the Indian subcontinent, including Hindu philosophy, Buddhist philosophy, and Jain philosophy. Having the same or rather intertwined origins, all of these philosophies have a common underlying theme of Dharma, and similarly attempt to explain the attainment of emancipation. They have been formalized and promulgated chiefly between 1000 BC to a few centuries AD, with residual commentaries and reformations continuing up to as late as the 20th century by Aurobindo and ISKCON among others, who provided stylized interpretations.In the history of the Indian subcontinent, following the establishment of a Vedic culture, the development of philosophical and religious thought over a period of two millennia gave rise to what came to be called the six schools of astika, or orthodox, Indian or Hindu philosophy. These schools have come to be synonymous with the greater religion of Hinduism, which was a development of the early Vedic religion.
Hindu philosophy constitutes an integral part of the culture of South Asia, and is the first of the Dharmic philosophies that were influential throughout the Far East. The great diversity in thought and practice of Hinduism is nurtured by its liberal universalism
Ancient Persian
Persian philosophy can be traced back as far as Old Iranian philosophical traditions and thoughts, with their ancient Indo-Iranian roots. These were considerably influenced by Zarathustra's teachings. Throughout Iranian history and due to remarkable political and social influences such as the Macedonian, the Arab, and the Mongol invasions of Persia, a wide spectrum of schools of thought arose. These espoused a variety of views on philosophical questions, extending from Old Iranian and mainly Zoroastrianism-influenced traditions to schools appearing in the late pre-Islamic era, such as Manicheism and Mazdakism, as well as various post-Islamic schools. Iranian philosophy after Arab invasion of Persia is characterized by different interactions with the Old Iranian philosophy, the Greek philosophy and with the development of Islamic philosophy. The Illumination school and the Transcendent theosophy are regarded as two of the main philosophical traditions of that era in Persia. Zoroastrianism has been identified as one of the key early events in the development of philosophy.
5th - 16th centuries
Europe
Medieval
Medieval philosophy is the philosophy of Western Europe and the Middle East during the Middle Ages, roughly extending from the Christianization of the Roman Empire until the Renaissance. Medieval philosophy is defined partly by the rediscovery and further development of classical Greek and Hellenistic philosophy, and partly by the need to address theological problems and to integrate the then widespread sacred doctrines of Abrahamic religion (Islam, Judaism, and Christianity) with secular learning.The history of western European medieval philosophy is traditionally divided into two main periods: the period in the Latin West following the Early Middle Ages until the 12th century, when the works of Aristotle and Plato were preserved and cultivated; and the "golden age" of the 12th, 13th and 14th centuries in the Latin West, which witnessed the culmination of the recovery of ancient philosophy, and significant developments in the field of philosophy of religion, logic and metaphysics.
The medieval era was disparagingly treated by the Renaissance humanists, who saw it as a barbaric "middle" period between the classical age of Greek and Roman culture, and the "rebirth" or renaissance of classical culture. Yet this period of nearly a thousand years was the longest period of philosophical development in Europe, and possibly the richest. Jorge Gracia has argued that "in intensity, sophistication, and achievement, the philosophical flowering in the thirteenth century could be rightly said to rival the golden age of Greek philosophy in the fourth century B.C."
Some problems discussed throughout this period are the relation of faith to reason, the existence and unity of God, the object of theology and metaphysics, the problems of knowledge, of universals, and of individuation.
Philosophers from the Middle Ages include the Christian philosophers Augustine of Hippo, Boethius, Anselm, Gilbert of Poitiers, Peter Abelard, Roger Bacon, Bonaventure, Thomas Aquinas, Duns Scotus, William of Ockham and Jean Buridan; the Jewish philosophers Maimonides and Gersonides; and the Muslim philosophers Alkindus, Alfarabi, Alhazen, Avicenna, Algazel, Avempace, Abubacer and Averroes. The medieval tradition of Scholasticism continued to flourish as late as the 17th century, in figures such as Francisco Suarez and John of St. Thomas.
Aquinas, father of Thomism, was immensely influential in Catholic Europe, placed a great emphasis on reason and argumentation, and was one of the first to use the new translation of Aristotle's metaphysical and epistemological writing. His work was a significant departure from the Neoplatonic and Augustinian thinking that had dominated much of early Scholasticism.
Renaissance
The Renaissance ("rebirth") was a period of transition between the Middle Ages and modern thought, in which the recovery of classical texts helped shift philosophical interests away from technical studies in logic, metaphysics, and theology towards eclectic inquiries into morality, philology, and mysticism. The study of the classics and the humane arts generally, such as history and literature, enjoyed a scholarly interest hitherto unknown in Christendom, a tendency referred to as humanism. Displacing the medieval interest in metaphysics and logic, the humanists followed Petrarch in making man and his virtues the focus of philosophy.The study of classical philosophy also developed in two new ways. On the one hand, the study of Aristotle was changed through the influence of Averroism. The disagreements between these Averroist Aristotelians, and more orthodox catholic Aristotelians such as Albertus Magnus and Thomas Aquinas eventually contributed to the development of a "humanist Aristotelianism" developed in the Renaissance, as exemplified in the thought of Pietro Pomponazzi and Giacomo Zabarella. Secondly, as an alternative to Aristotle, the study of Plato and the Neoplatonists became common. This was assisted by the rediscovery of works which had not been well known previously in Western Europe. Notable Renaissance Platonists include Nicholas of Cusa, and later Marsilio Ficino and Giovanni Pico della Mirandola.
The Renaissance also renewed interest in anti-Aristotelian theories of nature considered as an organic, living whole comprehensible independently of theology, as in the work of Nicholas of Cusa, Nicholas Copernicus, Giordano Bruno, Telesius, and Tommaso Campanella. Such movements in natural philosophy dovetailed with a revival of interest in occultism, magic, hermeticism, and astrology, which were thought to yield hidden ways of knowing and mastering nature (e.g., in Marsilio Ficino and Giovanni Pico della Mirandola).
These new movements in philosophy developed contemporaneously with larger religious and political transformations in Europe: the Reformation and the decline of feudalism. Though the theologians of the Protestant Reformation showed little direct interest in philosophy, their destruction of the traditional foundations of theological and intellectual authority harmonized with a revival of fideism and skepticism in thinkers such as Erasmus, Montaigne, and Francisco Sanches. Meanwhile, the gradual centralization of political power in nation-states was echoed by the emergence of secular political philosophies, as in the works of Niccolò Machiavelli (often described as the first modern political thinker, or a key turning point towards modern political thinking), Thomas More, Erasmus, Justus Lipsius, Jean Bodin, and Hugo Grotius.
East Asia
Mid-Imperial China
Mid-Imperial Chinese philosophy is primarily defined by the development of Neo-confucianism. During the Tang Dynasty, Buddhism from Nepal also became a prominent philosophical and religious discipline. (It should be noted that philosophy and religion were clearly distinguished in the West, whilst these concepts were more continuous in the East due to, for example, the philosophical concepts of Buddhism.)
Japanese
Korean
Middle East
Islamic
17th-21st centuries
Europe
Early modern philosophy
Chronologically, the early modern era of western philosophy is usually identified with the 17th and 18th centuries, with the 18th century often being referred to as the Enlightenment. Modern philosophy is distinguished from its predecessors by its increasing independence from traditional authorities such as the Church, academia, and Aristotelianism; a new focus on the foundations of knowledge and metaphysical system-building; and the emergence of modern physics out of natural philosophy. Other central topics of philosophy in this period include the nature of the mind and its relation to the body, the implications of the new natural sciences for traditional theological topics such as free will and God, and the emergence of a secular basis for moral and political philosophy. These trends first distinctively coalesce in Francis Bacon's call for a new, empirical program for expanding knowledge, and soon found massively influential form in the mechanical physics and rationalist metaphysics of Rene Descartes. Thomas Hobbes was the first to apply this methodology systematically to political philosophy and is the originator of modern political philosophy, including the modern theory of a "social contract". The academic canon of early modern philosophy generally includes Descartes, Spinoza, Leibniz, Locke, Berkeley, Hume, and Kant, though influential contributions to philosophy were made by many thinkers in this period, such as Galileo Galilei, Pierre Gassendi, Blaise Pascal, Nicolas Malebranche, Isaac Newton, Christian Wolff, Montesquieu, Pierre Bayle, Thomas Reid, Jean d'Alembert, and Adam Smith. Jean-Jacques Rousseau was a seminal figure in initiating reaction against the Enlightenment. The approximate end of the early modern period is most often identified with Immanuel Kant's systematic attempt to limit metaphysics, justify scientific knowledge, and reconcile both of these with morality and freedom.
19th-century philosophy
Later modern philosophy is usually considered to begin after the philosophy of Immanuel Kant at the beginning of the 19th century. German philosophy exercised broad influence in this century, owing in part to the dominance of the German university system. German idealists, such as Johann Gottlieb Fichte, Georg Wilhelm Friedrich Hegel, and Friedrich Wilhelm Joseph Schelling, transformed the work of Kant by maintaining that the world is constituted by a rational or mind-like process, and as such is entirely knowable. Arthur Schopenhauer's identification of this world-constituting process as an irrational will to live influenced later 19th- and early 20th-century thinking, such as the work of Friedrich Nietzsche and Sigmund Freud.
After Hegel's death in 1831, 19th-century philosophy largely turned against idealism in favor of varieties of philosophical naturalism, such as the positivism of Auguste Comte, the empiricism of John Stuart Mill, and the materialism of Karl Marx. Logic began a period of its most significant advances since the inception of the discipline, as increasing mathematical precision opened entire fields of inference to formalization in the work of George Boole and Gottlob Frege. Other philosophers who initiated lines of thought that would continue to shape philosophy into the 20th century include
20th-century philosophy
Within the last century, philosophy has increasingly become a professional discipline practiced within universities, like other academic disciplines. Accordingly, it has become less general and more specialized. In the view of one prominent recent historian: "Philosophy has become a highly organized discipline, done by specialists primarily for other specialists. The number of philosophers has exploded, the volume of publication has swelled, and the subfields of serious philosophical investigation have multiplied. Not only is the broad field of philosophy today far too vast to be embraced by one mind, something similar is true even of many highly specialized subfields."In the English-speaking world, analytic philosophy became the dominant school for much of the 20th century. In the first half of the century, it was a cohesive school, shaped strongly by logical positivism, united by the notion that philosophical problems could and should be solved by attention to logic and language. The pioneering work of Bertrand Russell was a model for the early development of analytic philosophy, moving from a rejection of the idealism dominant in late 19th century British philosophy to an neo-Humean empiricism, strengthened by the conceptual resources of modern mathematical logic. In the latter half of the 20th century, analytic philosophy diffused into a wide variety of disparate philosophical views, only loosely united by historical lines of influence and a self-identified commitment to clarity and rigor. The post-war transformation of the analytic program led in two broad directions: on one hand, an interest in ordinary language as a way of avoiding or redescribing traditional philosophical problems, and on the other, a more thoroughgoing naturalism that sought to dissolve the puzzles of modern philosophy via the results of the natural sciences (such as cognitive psychology and evolutionary biology). The shift in the work of Ludwig Wittgenstein, from a view congruent with logical positivism to a therapeutic dissolution of traditional philosophy as a linguistic misunderstanding of normal forms of life, was the most influential version of the first direction in analytic philosophy. The later work of Russell and the philosophy of W.V.O. Quine are influential exemplars of the naturalist approach dominant in the second half of the 20th century. But the diversity of analytic philosophy from the 1970s onward defies easy generalization: the naturalism of Quine and his epigoni was in some precincts superseded by a "new metaphysics" of possible worlds, as in the influential work of David Lewis. Recently, the experimental philosophy movement has sought to reappraise philosophical problems through social science research techniques.
On continental Europe, no single school or temperament enjoyed dominance. The flight of the logical positivists from central Europe during the 1930s and 1940s, however, diminished philosophical interest in natural science, and an emphasis on the humanities, broadly construed, figures prominently in what is usually called "continental philosophy". 20th century movements such as phenomenology, existentialism, modern hermeneutics, critical theory, structuralism, and poststructuralism are included within this loose category. The founder of phenomenology, Edmund Husserl, sought to study consciousness as experienced from a first-person perspective, while Martin Heidegger drew on the ideas of Kierkegaard, Nietzsche, and Husserl to propose an unconventional existential approach to ontology.
Etymology
The introduction of the terms "philosopher" and "philosophy" has been ascribed to the Greek thinker Pythagoras. The ascription is said to be based on a passage in a lost work of Herakleides Pontikos, a disciple of Aristotle. It is considered to be part of the widespread body of legends of Pythagoras of this time. "Philosopher" was understood as a word which contrasted with "sophist" (from sophoi). Traveling sophists or "wise men" were important in Classical Greece, often earning money as teachers, whereas philosophers are "lovers of wisdom" and not professionals.
Main theories
Realism and nominalism
Realism sometimes means the position opposed to the 18th-century idealism, namely that some things have real existence outside the mind. Its standard meaning is the doctrine that abstract entities corresponding to universal terms like "man" or "table" or "red" actually exist (e.g. for Plato in a separate realm of ideas). It is opposed to nominalism, the view that abstract or universal terms are words only, or denote mental states such as ideas, beliefs, or intentions. The latter position, developed by Peter Abelard and famously held by William of Ockham, is called conceptualism.
Rationalism and empiricism
Rationalism is any view emphasizing the role or importance of human reason. Extreme rationalism tries to base all knowledge on reason alone. Rationalism typically starts from premises that cannot coherently be denied, then attempts by logical steps to deduce every possible object of knowledge.The first rationalist, in this broad sense, is often held to be Parmenides (fl. 500 BC), who argued that it is impossible to doubt that thinking actually occurs. But thinking must have an object, therefore something beyond thinking really exists. Parmenides deduced that what really exists must have certain properties—for example, that it cannot come into existence or cease to exist, that it is a coherent whole, that it remains the same eternally (in fact, exists altogether outside time). This is known as the third man argument. Zeno of Elea (born c. 495 BC) was a disciple of Parmenides, and argued that motion is impossible, since the assertion that it exists implies a contradiction (see Zeno's arrow).
Plato (427–347 BC) was also influenced by Parmenides, but combined rationalism with a form of realism. The philosopher's work is to consider being, and the essence (ousia) of things. But the characteristic of essences is that they are universal. The nature of a man, a triangle, a tree, applies to all men, all triangles, all trees. Plato argued that these essences are mind-independent "forms", that humans (but particularly philosophers) can come to know by reason, and by ignoring the distractions of sense-perception.
Modern rationalism begins with Descartes. Reflection on the nature of perceptual experience, as well as scientific discoveries in physiology and optics, led Descartes (and also Locke) to the view that we are directly aware of ideas, rather than objects. This view gave rise to three questions:
# Is an idea a true copy of the real thing that it represents? Sensation is not a direct interaction between bodily objects and our sense, but is a physiological process involving representation (for example, an image on the retina). Locke thought that a "secondary quality" such as a sensation of green could in no way resemble the arrangement of particles in matter that go to produce this sensation, although he thought that "primary qualities" such as shape, size, number, were really in objects. # How can physical objects such as chairs and tables, or even physiological processes in the brain, give rise to mental items such as ideas? This is part of what became known as the mind-body problem. # If all the contents of awareness are ideas, how can we know that anything exists apart from ideas?
Descartes tried to address the last problem by reason. He began, echoing Parmenides, with a principle that he thought could not coherently be denied: I think, therefore I am (often given in his original Latin: Cogito ergo sum). From this principle, Descartes went on to construct a complete system of knowledge (which involves proving the existence of God, using, among other means, a version of the ontological argument). His view that reason alone could yield substantial truths about reality strongly influenced those philosophers usually considered modern rationalists (such as Baruch Spinoza, Gottfried Leibniz, and Christian Wolff), while provoking criticism from other philosophers who have retrospectively come to be grouped together as empiricists.
Empiricism, in contrast to rationalism, downplays or dismisses the ability of reason alone to yield knowledge of the world, preferring to base any knowledge we have on our senses. This dates back to the concept of tabula rasa (unscribed tablet) implicit in Aristotle's On the Soul, described more explicitly in Avicenna's The Book of Healing, and demonstrated in Ibn Tufail's Hayy ibn Yaqdhan as a thought experiment. Modern empiricism was notably expounded by Francis Bacon, John Locke in An Essay Concerning Human Understanding in 1689, and David Hume.
During this era, religious ideas played a mixed role in the struggles that preoccupied secular philosophy. Bishop Berkeley's famous idealist refutation of key tenets of Isaac Newton is a case of an Enlightenment philosopher who drew substantially from religious ideas. Other influential religious thinkers of the time include Blaise Pascal, Joseph Butler, Thomas Reid, and Jonathan Edwards. Other major writers, such as Jean-Jacques Rousseau and Edmund Burke, took a rather different path.
Skepticism
Skepticism is a philosophical attitude that, in its most extreme form, questions the possibility of obtaining any sort of knowledge. It was first articulated by Pyrrho, who believed that everything could be doubted except appearances. Sextus Empiricus (2nd century AD), skepticism's most prominent advocate, describes it as an"ability to place in antithesis, in any manner whatever, appearances and judgments, and thus ... to come first of all to a suspension of judgment and then to mental tranquility."
Skepticism so conceived is not merely the use of doubt, but is the use of doubt for a particular end: a calmness of the soul, or ataraxia. Skepticism poses itself as a challenge to dogmatism, whose adherents think they have found the truth.
Sextus noted that the reliability of perception may always be questioned, because it is idiosyncratic to the perceiver. The appearance of individual things changes depending on whether they are in a group: for example, the shavings of a goat's horn are white when taken alone, yet the intact horn is black. A pencil, when viewed lengthwise, looks like a stick; but when examined at the tip, it looks merely like a circle.
Skepticism was revived in the early modern period by Michel de Montaigne and Blaise Pascal. Its most extreme exponent, however, was David Hume. Hume argued that there are only two kinds of reasoning: what he called probable and demonstrative (cf. Hume's fork). Neither of these two forms of reasoning can lead us to a reasonable belief in the continued existence of an external world. Demonstrative reasoning cannot do this, because demonstration (that is, deductive reasoning from well-founded premises) alone cannot establish the uniformity of nature (as captured by scientific laws and principles, for example). Such reason alone cannot establish that the future will resemble the past. We have certain beliefs about the world (that the sun will rise tomorrow, for example), but these beliefs are the product of habit and custom, and do not depend on any sort of logical inferences from what is already given certain. But probable reasoning (inductive reasoning), which aims to take us from the observed to the unobserved, cannot do this either: it also depends on the uniformity of nature, and this supposed uniformity cannot be proved, without circularity, by any appeal to uniformity. The best that either sort of reasoning can accomplish is conditional truth: if certain assumptions are true, then certain conclusions follow. So nothing about the world can be established with certainty. Hume concludes that there is no solution to the skeptical argument—except, in effect, to ignore it.
Even if these matters were resolved in every case, we would have in turn to justify our standard of justification, leading to an infinite regress (hence the term regress skepticism).
Many philosophers have questioned the value of such skeptical arguments. The question of whether we can achieve knowledge of the external world is based on how high a standard we set for the justification of such knowledge. If our standard is absolute certainty, then we cannot progress beyond the existence of mental sensations. We cannot even deduce the existence of a coherent or continuing "I" that experiences these sensations, much less the existence of an external world. On the other hand, if our standard is too low, then we admit follies and illusions into our body of knowledge. This argument against absolute skepticism asserts that the practical philosopher must move beyond solipsism, and accept a standard for knowledge that is high but not absolute.
Idealism
Idealism is the epistemological doctrine that nothing can be directly known outside of the minds of thinking beings. Or in an alternative stronger form, it is the metaphysical doctrine that nothing exists apart from minds and the "contents" of minds. In modern Western philosophy, the epistemological doctrine begins as a core tenet of Descartes—that what is in the mind is known more reliably than what is known through the senses. The first prominent modern Western idealist in the metaphysical sense was George Berkeley. Berkeley argued that there is no deep distinction between mental states, such as feeling pain, and the ideas about so-called "external" things, that appear to us through the senses. There is no real distinction, in this view, between certain sensations of heat and light that we experience, which lead us to believe in the external existence of a fire, and the fire itself. Those sensations are all there is to fire. Berkeley expressed this with the Latin formula esse est percipi: "to be is to be perceived". In this view the opinion, "strangely prevailing upon men", that houses, mountains, and rivers have an existence independent of their perception by a thinking being is false.Forms of idealism were prevalent in philosophy from the 18th century to the early 20th century. Transcendental idealism, advocated by Immanuel Kant, is the view that there are limits on what can be understood, since there is much that cannot be brought under the conditions of objective judgment. Kant wrote his Critique of Pure Reason (1781–1787) in an attempt to reconcile the conflicting approaches of rationalism and empiricism, and to establish a new groundwork for studying metaphysics. Kant's intention with this work was to look at what we know and then consider what must be true about it, as a logical consequence of the way we know it. One major theme was that there are fundamental features of reality that escape our direct knowledge because of the natural limits of the human faculties. Although Kant held that objective knowledge of the world required the mind to impose a conceptual or categorical framework on the stream of pure sensory data—a framework including space and time themselves—he maintained that things-in-themselves existed independently of our perceptions and judgments; he was therefore not an idealist in any simple sense. Indeed, Kant's account of things-in-themselves is both controversial and highly complex. Continuing his work, Johann Gottlieb Fichte and Friedrich Schelling dispensed with belief in the independent existence of the world, and created a thoroughgoing idealist philosophy.
The most notable work of this German idealism was G. W. F. Hegel's Phenomenology of Spirit, of 1807. Hegel admitted his ideas were not new, but that all the previous philosophies had been incomplete. His goal was to correctly finish their job. Hegel asserts that the twin aims of philosophy are to account for the contradictions apparent in human experience (which arise, for instance, out of the supposed contradictions between "being" and "not being"), and also simultaneously to resolve and preserve these contradictions by showing their compatibility at a higher level of examination ("being" and "not being" are resolved with "becoming"). This program of acceptance and reconciliation of contradictions is known as the "Hegelian dialectic". Philosophers in the Hegelian tradition include Ludwig Andreas Feuerbach, who coined the term projection as pertaining to our inability to recognize anything in the external world without projecting qualities of ourselves upon those things; Karl Marx; Friedrich Engels; and the British idealists, notably T. H. Green, J. M. E. McTaggart and F. H. Bradley.
Few 20th century philosophers have embraced idealism. However, quite a few have embraced Hegelian dialectic. Immanuel Kant's "Copernican Turn" also remains an important philosophical concept today.
Pragmatism
Pragmatism was founded in the spirit of finding a scientific concept of truth that does not depend on personal insight (revelation) or reference to some metaphysical realm. The truth of a statement should be judged by the effect it has on our actions, and truth should be seen as what the whole of scientific enquiry ultimately agrees on. This should probably be seen as a guiding principle more than a definition of what it means for something to be true, though the details of how this principle should be interpreted have been subject to discussion since Charles S. Peirce first conceived it. Peirce's maxim of pragmatism is as follows: "Consider what effects, which might conceivably have practical bearings, we conceive the object of our conception to have. Then, our conception of these effects is the whole of our conceptions of the object." Like postmodern neo-pragmatist Richard Rorty, many are convinced that pragmatism asserts that the truth of beliefs does not consist in their correspondence with reality, but in their usefulness and efficacy.The late 19th-century American philosophers Charles Sanders Peirce and William James were its co-founders, and it was later developed by John Dewey as instrumentalism. Since the usefulness of any belief at any time might be contingent on circumstance, Peirce and James conceptualised final truth as something only established by the future, final settlement of all opinion. Critics have accused pragmatism of falling victim to a simple fallacy: because something that is true proves useful, that usefulness is the basis for its truth. Thinkers in the pragmatist tradition have included John Dewey, George Santayana, W. V. O. Quine and C. I. Lewis. Pragmatism has more recently been taken in new directions by Richard Rorty, John Lachs, Donald Davidson, Susan Haack, and Hilary Putnam.
Phenomenology
Edmund Husserl's phenomenology was an ambitious attempt to lay the foundations for an account of the structure of conscious experience in general. An important part of Husserl's phenomenological project was to show that all conscious acts are directed at or about objective content, a feature that Husserl called intentionality.In the first part of his two-volume work, the Logical Investigations (1901), he launched an extended attack on psychologism. In the second part, he began to develop the technique of descriptive phenomenology, with the aim of showing how objective judgments are indeed grounded in conscious experience—not, however, in the first-person experience of particular individuals, but in the properties essential to any experiences of the kind in question.
He also attempted to identify the essential properties of any act of meaning. He developed the method further in Ideas (1913) as transcendental phenomenology, proposing to ground actual experience, and thus all fields of human knowledge, in the structure of consciousness of an ideal, or transcendental, ego. Later, he attempted to reconcile his transcendental standpoint with an acknowledgement of the intersubjective life-world in which real individual subjects interact. Husserl published only a few works in his lifetime, which treat phenomenology mainly in abstract methodological terms; but he left an enormous quantity of unpublished concrete analyses.
Husserl's work was immediately influential in Germany, with the foundation of phenomenological schools in Munich and Göttingen. Phenomenology later achieved international fame through the work of such philosophers as Martin Heidegger (formerly Husserl's research assistant), Maurice Merleau-Ponty, and Jean-Paul Sartre. Indeed, through the work of Heidegger and Sartre, Husserl's focus on subjective experience influenced aspects of existentialism.
Existentialism
Existentialism is a term applied to the work of a number of late 19th- and 20th-century philosophers who, despite profound doctrinal differences, shared the belief that philosophical thinking begins with the human subject—not merely the thinking subject, but the acting, feeling, living human individual. In existentialism, the individual's starting point is characterized by what has been called "the existential attitude", or a sense of disorientation and confusion in the face of an apparently meaningless or absurd world. Many existentialists have also regarded traditional systematic or academic philosophy, in both style and content, as too abstract and remote from concrete human experience.Although they did not use the term, the 19th-century philosophers Søren Kierkegaard and Friedrich Nietzsche are widely regarded as the fathers of existentialism. Their influence, however, has extended beyond existentialist thought.
The main target of Kierkegaard's writings was the idealist philosophical system of Hegel which, he thought, ignored or excluded the inner subjective life of living human beings. Kierkegaard, conversely, held that "truth is subjectivity", arguing that what is most important to an actual human being are questions dealing with an individual's inner relationship to existence. In particular, Kierkegaard, a Christian, believed that the truth of religious faith was a subjective question, and one to be wrestled with passionately.
Although Kierkegaard and Nietzsche were among his influences, the extent to which the German philosopher Martin Heidegger should be considered an existentialist is debatable. In Being and Time he presented a method of rooting philosophical explanations in human existence (Dasein) to be analysed in terms of existential categories (existentiale); and this has led many commentators to treat him as an important figure in the existentialist movement. However, in The Letter on Humanism, Heidegger explicitly rejected the existentialism of Jean-Paul Sartre.
Sartre became the best-known proponent of existentialism, exploring it not only in theoretical works such as Being and Nothingness, but also in plays and novels. Sartre, along with Simone de Beauvoir, represented an avowedly atheistic branch of existentialism, which is now more closely associated with their ideas of nausea, contingency, bad faith, and the absurd than with Kierkegaard's spiritual angst. Nevertheless, the focus on the individual human being, responsible before the universe for the authenticity of his or her existence, is common to all these thinkers.
Structuralism and post-structuralism
Inaugurated by the linguist Ferdinand de Saussure, structuralism sought to clarify systems of signs through analyzing the discourses they both limit and make possible. Saussure conceived of the sign as being delimited by all the other signs in the system, and ideas as being incapable of existence prior to linguistic structure, which articulates thought. This led continental thought away from humanism, and toward what was termed the decentering of man: language is no longer spoken by man to express a true inner self, but language speaks man.Structuralism sought the province of a hard science, but its positivism soon came under fire by poststructuralism, a wide field of thinkers, some of whom were once themselves structuralists, but later came to criticize it. Structuralists believed they could analyze systems from an external, objective standing, for example, but the poststructuralists argued that this is incorrect, that one cannot transcend structures and thus analysis is itself determined by what it examines, while the distinction between the signifier and signified was treated as crystalline by structuralists, poststructuralists asserted that every attempt to grasp the signified results in more signifiers, so meaning is always in a state of being deferred, making an ultimate interpretation impossible.
Structuralism came to dominate continental philosophy throughout the 1960s and early '70s, encompassing thinkers as diverse as Claude Lévi-Strauss, Roland Barthes and Jacques Lacan. Post-structuralism came to predominate over the 1970s onwards, including thinkers such as Michel Foucault, Jacques Derrida, Gilles Deleuze and even Roland Barthes; it incorporated a critique of structuralism's limitations.
The analytic tradition
The term analytic philosophy roughly designates a group of philosophical methods that stress detailed argumentation, attention to semantics, use of classical logic and non-classical logics and clarity of meaning above all other criteria. Some have held that philosophical problems arise through misuse of language or because of misunderstandings of the logic of our language, while some maintain that there are genuine philosophical problems and that philosophy is continuous with science. Michael Dummett in his Origins of Analytical Philosophy makes the case for counting Gottlob Frege's The Foundations of Arithmetic as the first analytic work, on the grounds that in that book Frege took the linguistic turn, analyzing philosophical problems through language. Bertrand Russell and G.E. Moore are also often counted as founders of analytic philosophy, beginning with their rejection of British idealism, their defense of realism and the emphasis they laid on the legitimacy of analysis. Russell's classic works The Principles of Mathematics, On Denoting and Principia Mathematica with Alfred North Whitehead, aside from greatly promoting the use of mathematical logic in philosophy, set the ground for much of the research program in the early stages of the analytic tradition, emphasizing such problems as: the reference of proper names, whether 'existence' is a property, the nature of propositions, the analysis of definite descriptions, the discussions on the foundations of mathematics; as well as exploring issues of ontological commitment and even metaphysical problems regarding time, the nature of matter, mind, persistence and change, which Russell tackled often with the aid of mathematical logic. Russell and Moore's philosophy, in the beginning of the 20th century, developed as a critique of Hegel and his British followers in particular, and of grand systems of speculative philosophy in general, though by no means all analytic philosophers reject the philosophy of Hegel (see Charles Taylor) nor speculative philosophy. Some schools in the group include logical positivism, and ordinary language both markedly influenced by Russell and Wittgenstein's development of Logical Atomism the former positively and the latter negatively.In 1921, Ludwig Wittgenstein, who studied under Russell at Cambridge, published his Tractatus Logico-Philosophicus, which gave a rigidly "logical" account of linguistic and philosophical issues. At the time, he understood most of the problems of philosophy as mere puzzles of language, which could be solved by investigating and then minding the logical structure of language. Years later, he reversed a number of the positions he set out in the Tractatus, in for example his second major work, Philosophical Investigations (1953). Investigations was influential in the development of "ordinary language philosophy," which was promoted by Gilbert Ryle, J.L. Austin, and a few others. In the United States, meanwhile, the philosophy of W.V.O. Quine was having a major influence, with such classics as Two Dogmas of Empiricism. In that paper Quine criticizes the distinction between analytic and synthetic statements, arguing that a clear conception of analyticity is unattainable. He argued for holism, the thesis that language, including scientific language, is a set of interconnected sentences, none of which can be verified on its own, rather, the sentences in the language depend on each other for their meaning and truth conditions. A consequence of Quine's approach is that language as a whole has only a thin relation to experience. Some sentences that refer directly to experience might be modified by sense impressions, but as the whole of language is theory-laden, for the whole language to be modified, more than this is required. However, most of the linguistic structure can in principle be revised, even logic, in order to better model the world. Notable students of Quine include Donald Davidson and Daniel Dennett. The former devised a program for giving a semantics to natural language and thereby answer the philosophical conundrum "what is meaning?". A crucial part of the program was the use of Alfred Tarski's semantic theory of truth. Dummett, among others, argued that truth conditions should be dispensed within the theory of meaning, and replaced by assertibility conditions. Some propositions, on this view, are neither true nor false, and thus such a theory of meaning entails a rejection of the law of the excluded middle. This, for Dummett, entails antirealism, as Russell himself pointed out in his An Inquiry into Meaning and Truth.
By the 1970s there was a renewed interest in many traditional philosophical problems by the younger generations of analytic philosophers. David Lewis, Saul Kripke, Derek Parfit and others took an interest in traditional metaphysical problems, which they began exploring by the use of logic and philosophy of language. Among those problems some distinguished ones were: free will, essentialism, the nature of personal identity, identity over time, the nature of the mind, the nature of causal laws, space-time, the properties of material beings, modality, etc. In those universities where analytic philosophy has spread, these problems are still being discussed passionately. Analytic philosophers are also interested in the methodology of analytic philosophy itself, with Timothy Williamson, Wykeham Professor of Logic at Oxford, publishing recently a book entitled The Philosophy of Philosophy. Some influential figures in contemporary analytic philosophy are: Timothy Williamson, David Lewis, John Searle, Thomas Nagel, Hilary Putnam, Michael Dummett, Peter van Inwagen and Saul Kripke. Analytic philosophy has sometimes been accused of not contributing to the political debate or to traditional questions in aesthetics. However, with the appearance of A Theory of Justice by John Rawls and Anarchy, State and Utopia by Robert Nozick, analytic political philosophy acquired respectability. Analytic philosophers have also shown depth in their investigations of aesthetics, with Roger Scruton, Nelson Goodman, Arthur Danto and others developing the subject to its current shape.
Moral and political philosophy
Human nature and political legitimacy
From ancient times, and well beyond them, the roots of justification for political authority were inescapably tied to outlooks on human nature. In The Republic, Plato presented the argument that the ideal society would be run by a council of philosopher-kings, since those best at philosophy are best able to realize the good. Even Plato, however, required philosophers to make their way in the world for many years before beginning their rule at the age of fifty. For Aristotle, humans are political animals (i.e. social animals), and governments are set up to pursue good for the community. Aristotle reasoned that, since the state (polis) was the highest form of community, it has the purpose of pursuing the highest good. Aristotle viewed political power as the result of natural inequalities in skill and virtue. Because of these differences, he favored an aristocracy of the able and virtuous. For Aristotle, the person cannot be complete unless he or she lives in a community. His The Nicomachean Ethics and The Politics are meant to be read in that order. The first book addresses virtues (or "excellences") in the person as a citizen; the second addresses the proper form of government to ensure that citizens will be virtuous, and therefore complete. Both books deal with the essential role of justice in civic life.Nicolas of Cusa rekindled Platonic thought in the early 15th century. He promoted democracy in Medieval Europe, both in his writings and in his organization of the Council of Florence. Unlike Aristotle and the Hobbesian tradition to follow, Cusa saw human beings as equal and divine (that is, made in God's image), so democracy would be the only just form of government. Cusa's views are credited by some as sparking the Italian Renaissance, which gave rise to the notion of "Nation-States".
Later, Niccolò Machiavelli rejected the views of Aristotle and Thomas Aquinas as unrealistic. The ideal sovereign is not the embodiment of the moral virtues; rather the sovereign does whatever is successful and necessary, rather than what is morally praiseworthy. Thomas Hobbes also contested many elements of Aristotle's views. For Hobbes, human nature is essentially anti-social: people are essentially egoistic, and this egoism makes life difficult in the natural state of things. Moreover, Hobbes argued, though people may have natural inequalities, these are trivial, since no particular talents or virtues that people may have will make them safe from harm inflicted by others. For these reasons, Hobbes concluded that the state arises from a common agreement to raise the community out of the state of nature. This can only be done by the establishment of a sovereign, in which (or whom) is vested complete control over the community, and is able to inspire awe and terror in its subjects.
Many in the Enlightenment were unsatisfied with existing doctrines in political philosophy, which seemed to marginalize or neglect the possibility of a democratic state. Jean-Jacques Rousseau was among those who attempted to overturn these doctrines: he responded to Hobbes by claiming that a human is by nature a kind of "noble savage", and that society and social contracts corrupt this nature. Another critic was John Locke. In Second Treatise on Government he agreed with Hobbes that the nation-state was an efficient tool for raising humanity out of a deplorable state, but he argued that the sovereign might become an abominable institution compared to the relatively benign unmodulated state of nature.
Following the doctrine of the fact-value distinction, due in part to the influence of David Hume and his student Adam Smith, appeals to human nature for political justification were weakened. Nevertheless, many political philosophers, especially moral realists, still make use of some essential human nature as a basis for their arguments.
Marxism is derived from the work of Karl Marx and Friedrich Engels. Their idea that capitalism is based on exploitation of workers and causes alienation of people from their human nature, the historical materialism, their view of social classes, etc., have influenced many fields of study, such as sociology, economics, and politics. Marxism inspired the Marxist school of communism, which brought a huge impact on the history of the 20th century.
Consequentialism, deontology, and the aretaic turn
One debate that has commanded the attention of ethicists in the modern era has been between consequentialism (actions are to be morally evaluated solely by their consequences) and deontology (actions are to be morally evaluated solely by consideration of agents' duties, the rights of those whom the action concerns, or both).Jeremy Bentham and John Stuart Mill are famous for propagating utilitarianism, which is the idea that the fundamental moral rule is to strive toward the "greatest happiness for the greatest number". However, in promoting this idea they also necessarily promoted the broader doctrine of consequentialism.
Adopting a position opposed to consequentialism, Immanuel Kant argued that moral principles were simply products of reason. Kant believed that the incorporation of consequences into moral deliberation was a deep mistake, since it denies the necessity of practical maxims in governing the working of the will. According to Kant, reason requires that we conform our actions to the categorical imperative, which is an absolute duty. An important 20th-century deontologist, W.D. Ross, argued for weaker forms of duties called prima facie duties.
More recent works have emphasized the role of character in ethics, a movement known as the aretaic turn (that is, the turn towards virtues). One strain of this movement followed the work of Bernard Williams. Williams noted that rigid forms of consequentialism and deontology demanded that people behave impartially. This, Williams argued, requires that people abandon their personal projects, and hence their personal integrity, in order to be considered moral.
G.E.M. Anscombe, in an influential paper, "Modern Moral Philosophy" (1958), revived virtue ethics as an alternative to what was seen as the entrenched positions of Kantianism and consequentialism. Aretaic perspectives have been inspired in part by research of ancient conceptions of virtue. For example, Aristotle's ethics demands that people follow the Aristotelian mean, or balance between two vices; and Confucian ethics argues that virtue consists largely in striving for harmony with other people. Virtue ethics in general has since gained many adherents, and has been defended by such philosophers as Philippa Foot, Alasdair MacIntyre, and Rosalind Hursthouse.
Applied philosophy
The ideas conceived by a society have profound repercussions on what actions the society performs. The applied study of philosophy yields applications such as those in ethics—applied ethics in particular—and political philosophy. The political and economic philosophies of Confucius, Sun Zi, Chanakya, Ibn Khaldun, Ibn Rushd, Ibn Taimiyyah, Niccolò Machiavelli, Gottfried Leibniz, John Locke, Jean-Jacques Rousseau, Adam Smith, Karl Marx, John Stuart Mill, Mahatma Gandhi, Martin Luther King Jr. and others—all of these have been used to shape and justify governments and their actions.In the field of philosophy of education, progressive education as championed by John Dewey has had a profound impact on educational practices in the United States in the 20th century. Descendants of this movement include the current efforts in philosophy for children, which are part of philosophy education. Carl von Clausewitz's political philosophy of war has had a profound effect on statecraft, international politics, and military strategy in the 20th century, especially in the years around World War II. Logic has become crucially important in mathematics, linguistics, psychology, computer science, and computer engineering.
Other important applications can be found in epistemology, which aid in understanding the requisites for knowledge, sound evidence, and justified belief (important in law, economics, decision theory, and a number of other disciplines). The philosophy of science discusses the underpinnings of the scientific method and has affected the nature of scientific investigation and argumentation. As such, philosophy has fundamental implications for science as a whole. For example, the strictly empirical approach of Skinner's behaviorism affected for decades the approach of the American psychological establishment. Deep ecology and animal rights examine the moral situation of humans as occupants of a world that has non-human occupants to consider also. Aesthetics can help to interpret discussions of music, literature, the plastic arts, and the whole artistic dimension of life. In general, the various philosophies strive to provide practical activities with a deeper understanding of the theoretical or conceptual underpinnings of their fields.
Often philosophy is seen as an investigation into an area not sufficiently well understood to be its own branch of knowledge. What were once philosophical pursuits have evolved into the modern day fields such as psychology, sociology, linguistics, and economics, for example.
The New York Times reported an increase in philosophy majors at United States universities in 2008.
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