Adam Gopnik is a staff writer for The New Yorker magazine. He is the author of several books, including "Paris to the Moon" and "Angels and Ages: A Short Book About Darwin, Lincoln, and Modern Life." He wrote the foreword for "The Good Book," edited by Andrew Blauner. This interview is edited and produced with music and other features in the On Being episode "Adam Gopnik — Practicing Doubt, Redrawing Faith." Find more at onbeing.org.