In twelve fiercely funny, mind-expanding chapters, Dawkins explains how the natural world arose without a designer—the improbability and beauty of the “bottom-up programming” that engineers an embryo or a flock of starlings—and challenges head-on some of the most basic assumptions made by the world’s religions: Do you believe in God? Which one? Is the Bible a “Good Book”? Is adhering to a religion necessary, or even likely, to make people good to one another? Dissecting everything from Abraham’s abuse of Isaac to the construction of a snowflake, Outgrowing God is a concise, provocative guide to thinking for yourself.