“If I could give each of you a graduation present, it would be this—the most inspiring book I've ever read."—Bill Gates (May, 2017)A provocative history of violence—from the New York Times bestselling author of The Stuff of Thought, The Blank Slate, and Enlightenment Now.Believe it or not, today we may be living in the most peaceful moment in our species' existence. In his gripping and controversial new work, New York Times bestselling author Steven Pinker shows that despite