C. S. Lewis

The Oxford scholar C. S. Lewis was a settled atheist who found himself, as he later put it, cornered by his own reasoning — admitting God in 1929, and after a long night's talk with his friends J. R. R. Tolkien and Hugo Dyson about myth and truth, accepting Christ in 1931. He became the twentieth century's most-read defender of the faith, and told the story plainly in his own memoir.

C. S. Lewis, Surprised by Joy (1955) — in copyright; cited, not reproduced.