C.S. Lewis believed in the absolute logic of faith; his books, letters, and essays demonstrated the immutability of religion in his life. This collection mines their pages to bring out some of his essential lessons and to showcase the themes that provided the foundation for his philosophy: The Nature of Man, The Moral World, Sin, The Christian Commitment, Love and Sex, Hell and Heaven, and others. His preoccupations produced inspiring literature that was sometimes whimsical, often provocative, and always emotionally compelling. Here, then, is an anthology to return to again and again—whenever we most need wisdom, insight into how best to wrestle with a particular challenge, or simply the kind of unexpected perspective Lewis always provides.