C. S. Lewis, renowned Christian apologist and beloved author of children's novels, is rarely thought of as a "philosopher" per se despite having both studied and taught philosophy for several years at Oxford. Moreover, Lewis's long journey to Christianity was essentially philosophical -- passing through seven different stages. This journey, as well as every philosophical topic Lewis discussed, including metaphysics, natural theology, epistemology, logic, psychology, ethics, socio-political philosophy, and aesthetics are explained here in detail. Barkman incorporates previously unexplored treasures from Lewis's unpublished philosophy lecture notes, lost philosophical essays, and hand-written annotations from copies of his philosophical books, such as Aristotle's Ethics and Augustine's City of God. _._._._._ "Indispensable" Dr. James Como, author of "Remembering C.S. Lewis."_._._._._ "A magisterial work, chock full of fresh historical tidbits and penetrating analysis." Dr. David Bagget, author of "C.S. Lewis as Philosopher."