Antony Garrard Newton Flew (11 February 1923 – 8 April 2010) was a British philosopher. Belonging to the analytic and evidentialist schools of thought, he was notable for his works on the philosophy of religion.

Flew was a strong advocate of atheism, arguing that one should presuppose atheism until empirical evidence of a God surfaces. He also criticised the idea of life after death, the free will defence to the problem of evil, and the meaningfulness of the concept of God. However, in 2004 he stated an allegiance to deism, more specifically a belief in the Aristotelian God, stating that in keeping his lifelong commitment to go where the evidence leads, he now believes in the existence of God.

He later wrote the book There is a God: How the World's Most Notorious Atheist Changed His Mind, with contributions from Roy Abraham Varghese. This book (and Flew's conversion itself) has been the subject of controversy, following an article in the New York Times magazine alleging that Flew had mentally declined, and that Varghese was the primary author. The matter remains contentious, with some commentators including PZ Myers and Richard Carrier supporting the allegations, and others, including Flew himself, opposing them.

William Lane Craig (born August 23, 1949) is an American analytic philosopher, philosophical theologian, and Christian apologist. He is known for his work in the philosophy of religion, philosophy of time, and the defense of Christian theism. One of his most notable contributions to the philosophy of religion is his defense of the Kalām cosmological argument, which is the most widely discussed argument for the existence of God in contemporary Western philosophy. In theology, he has also defended Molinism and the belief that God is, since Creation, subject to time.

Craig has authored or edited over 30 books, including The Kalām Cosmological Argument (1979), The Cosmological Argument from Plato to Leibniz (1980), Theism, Atheism, and Big Bang Cosmology (with Quentin Smith, 1993), Philosophical Foundations for a Christian Worldview (with J.P. Moreland, 2003) and Reasonable Faith: Christian Truth and Apologetics (3d edition, 2008).

Craig received a Bachelor of Arts degree in communications from Wheaton College, Illinois, in 1971 and two summa cum laude master's degrees from Trinity Evangelical Divinity School in Deerfield, Illinois, in 1975, in philosophy of religion and ecclesiastical history. He earned a Ph.D. in philosophy under John Hick at the University of Birmingham, England in 1977 and a Th.D. under Wolfhart Pannenberg at the University of Munich in 1984.

William Lane (6 September 1861 – 26 August 1917) was a journalist, advocate of Australian labour politics and a utopian.

Lane was born in Bristol, England, eldest son of James Lane, from Ireland a Protestant Master Gardener, and his English wife Caroline, née Hall. When Lane was born his father was earning a miserable wage, but later his circumstances improved and he became an employer. The boy was educated at Bristol Grammar School and showed ability, but he was sent early to work as an office boy. Lane's mother died when he was 14 years of age, and at age 16 he migrated to Canada, then to the United States, where he worked first as a printer, then as a reporter for the Detroit Free Press (1881), there meeting his future wife Ann MacGuire. In 1885 they migrated to Brisbane, Australia, where Lane immediately got work as a feature writer for the weekly newspaper Queensland Figaro, then as a columnist for the newspapers Brisbane Courier and Evening Telegraph, using a number of pseudonyms ("Lucinda Sharpe", which some consider to be the work of Annie Lane, William Wilcher and "Sketcher").

Clinton Richard Dawkins, FRS, FRSL (born 26 March 1941), known as Richard Dawkins, is a British ethologist, evolutionary biologist and author. He is an emeritus fellow of New College, Oxford, and was the University of Oxford's Professor for Public Understanding of Science from 1995 until 2008.

Dawkins came to prominence with his 1976 book The Selfish Gene, which popularised the gene-centered view of evolution and introduced the term meme. In 1982 he introduced an influential concept into evolutionary biology, presented in his book The Extended Phenotype, that the phenotypic effects of a gene are not necessarily limited to an organism's body, but can stretch far into the environment, including the bodies of other organisms.

Dawkins is an atheist, a vice president of the British Humanist Association, and a supporter of the Brights movement. He is well known for his criticism of creationism and intelligent design. In his 1986 book The Blind Watchmaker, he argued against the watchmaker analogy, an argument for the existence of a supernatural creator based upon the complexity of living organisms. Instead, he described evolutionary processes as analogous to a blind watchmaker. He has since written several popular science books, and makes regular television and radio appearances, predominantly discussing these topics. In his 2006 book The God Delusion, Dawkins contends that a supernatural creator almost certainly does not exist and that religious faith is a delusion—"a fixed false belief." As of January 2010 the English-language version has sold more than two million copies and had been translated into 31 languages.

Gary Robert Habermas (born 1950) is an American evangelical Christian apologist, historian, and philosopher of religion. He is a prolific author, lecturer, and debater on the topic of the Resurrection of Jesus. Habermas is considered to be one of the foremost experts on the resurrection.

Habermas is Distinguished Professor of Apologetics and Philosophy and chairman of the department of philosophy and theology at Liberty University in Lynchburg, Virginia. He holds a Ph.D. (1976) from Michigan State University in the area of History and Philosophy of Religion and an M.A. (1973) from the University of Detroit in Philosophical Theology. He has specialized in cataloging and communicating trends among scholars in the field of historical Jesus and New Testament studies. Habermas has authored or co-authored 35 books on religious and philosophical subjects, contributed to over 60 chapters or articles in books, and published over 100 articles and reviews in peer-reviewed journals. He continues to do research, publish popular and academic papers, give debates, and he frequently appears on television.