A landmark contribution to humanity's understanding of itself The New York Times If you want to know why you hold your moral beliefs and why many people disagree with you, read this book -- Simon Baron-Cohen author of The Essential Difference A truly seminal book -- David Goodhart Prospect A tour de force - brave, brilliant, and eloquent. It will challenge the way you think about liberals and conservatives, atheism and religion, good and evil -- Paul Bloom author of How Pleasure Works Compelling . . . a fluid combination of erudition and entertainment -- Ian Birrell Observer Lucid and thought-provoking . . .