Letters on the English author of "Novum Organum" and father of experimental philosophy. Letter 13 is about John Locke and his theories on the immortality of the soul. Letter 14 compares British philosopher Isaac Newton to French philosopher René Descartes. Upon his death in 1727, Newton was compared to Descartes in a eulogy performed by French philosopher Fontenelle. While the British did not appreciate this comparison, Voltaire argues that Descartes, too, was a great philosopher and mathematician. Letter 15 focuses on Newton's law of universal gravitation. Letter 16 talks about Newton's work with optics. Letter 17 discusses Newton's work with geometry and his theories
William Seager (philosopher) – present. William Seager (philosopher) William Edward Seager (born April 11, 1952 in Edmonton, Alberta) is a Canadian philosopher. He is a Professor of philosophy at the University of Toronto, Scarborough. His academic specialties of the philosophy of mind, and the philosophy of science He received his B.A. in 1973 from the University of Alberta. his M.A. in 1976 from the same university and his Ph.D in 1981 from the University of Toronto under the direction of R. B. DeSousa with a thesis on "Materialism and the Foundations of Representation" He has been Associate Editor of "Canadian Journal of Philosophy"