"Is there a God?" is the most central and profound question that humans ask. Throughout history, this subject has been discussed, defended, refuted, and debated. With the New Atheists gaining a loud voice in today's world, it is time to revisit the longstanding intellectual tradition on the side of faith. Francis Collins, New York Times bestselling author of The Language of God and renowned physician and geneticist, defends the reason for faith. He takes us through the writings of many of the world's greatest thinkers--- philosophers, preachers, poets, scientists-- including such luminaries as C. S. Lewis and Augustine, and unexpected voices such as A.N. Wilson and Annie Dillard. Despite the doubts of a cynical world, this essential companion proves once and for all the rationality of faith.