In philosophy, a subject is a being that has subjective experiences, subjective consciousness or a relationship with another entity (or "object"). A subject is an observer and an object is a thing observed. This concept is especially important in continental philosophy, where 'the Subject' is a central term in debates over human autonomy and the nature of the self.

The sharp distinction between subject and object corresponds to the distinction, in the philosophy of René Descartes, between thought and extension. Descartes believed that thought (subjectivity) was the essence of the mind, and that extension (the occupation of space) was the essence of matter.

In the modern continental tradition, which may plausibly be said to date from Descartes, debates over the nature of the Subject play a role comparable to debates over personhood within the distinct Anglo-American tradition of analytical philosophy.

In critical theory and psychology, subjectivity is also the actions or discourses that produce individuals or 'I'—the 'I' is the subject.

Subject (Latin subiectus "lying beneath") may refer to:

A subject is an individual subjected to the rule by an elite, see feudalism

Subject as a title or proper noun

Philosophy is the study of general and fundamental problems, such as those connected with reality, existence, knowledge, values, reason, mind, and language. Philosophy is distinguished from other ways of addressing such problems by its critical, generally systematic approach and its reliance on rational argument. The word "philosophy" comes from the Greek φιλοσοφία (philosophia), which literally means "love of wisdom".

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.

The main areas of study in philosophy today include epistemology, logic, metaphysics, ethics, and aesthetics.

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. 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. Among his notable concepts are the "Chinese Room" argument against artificial intelligence.

Searle's father, G. W. Searle, an electrical engineer, was employed by AT&T, while his mother, Hester Beck Searle, was a physician. John 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.

In the 1950s, as an undergraduate at the University of Wisconsin, Searle was the secretary of "Students against Joseph McCarthy" (McCarthy was then the junior Senator from Wisconsin).

Alain Badiou (French pronunciation: [alɛ̃ badju]  (listen) (help·info); born 17 January 1937 in Rabat, Morocco) is a French philosopher, professor at European Graduate School, formerly chair of Philosophy at the École Normale Supérieure (ENS).

Badiou has written about the concepts of being, truth and the subject in a way that, he claims, is neither postmodern nor simply a repetition of modernity. Politically, Badiou is committed to the far left, and to the communist tradition.

Slavoj Žižek has written of Badiou that he is "a figure like Plato or Hegel walk[ing] here among us".

Badiou was a student at the Lycée Louis-Le-Grand and then the Ecole Normale Supérieure (1957–1961). He taught at the lycée in Reims from 1963 where he became a close friend of fellow playwright (and philosopher) François Regnault, and published a couple of novels before moving to the University of Paris VIII (Vincennes-Saint Denis) in 1969. Badiou was politically active very early on, and was one of the founding members of the Unified Socialist Party (PSU). The PSU was particularly active in the struggle for the decolonization of Algeria. He wrote his first novel, Almagestes, in 1964. In 1967 he joined a study group organized by Louis Althusser, became increasingly influenced by Jacques Lacan and became a member of the editorial board of Cahiers pour l’Analyse. By then he "already had a solid grounding in mathematics and logic (along with Lacanian theory)", and his own two contributions to the pages of Cahiers "anticipate many of the distinctive concerns of his later philosophy".