“This is one of the best recent books that I have read, and it's the one that I expect to re-read most often. It's an honest, clear account of morality and justice that makes those theoretical concepts come alive as ubiquitous real-life choices. In the process of reading it, you'll learn about wrenching moral dilemmas such as paying ransoms to Somali pirates, maintaining nuclear weapons as deterrents, good people becoming Nazis, and the immorality of the Bible and of the Ten Commandments.” ―Jared Diamond, Pulitzer-prize-winning author of the best-selling books Guns, Germs, and Steel, Collapse, and The World until Yesterday

“I suspect that people will be arguing with Michael Shermer's premise before they read a page: ‘The moral arc is bending toward truth, justice, and freedom? Is he hallucinating? Just look at...' In these cynical times, where right and left foresee disaster and despair (albeit for different reasons), Shermer's monumental opus, spanning centuries, nations, and cultures, is bound to provoke debate and open minds. Exactly what an important work of skepticism, science, and reason should do.” ―Carol Tavris, Ph.D., social psychologist and author of The Mismeasure of Woman and coauthor of Mistakes Were Made (But Not by Me)

“A thrilling and fascinating book, which could change your view of human history and human destiny. If you wanted a sequel to The Better Angels of Our Nature, one which explored all of our spheres of moral progress, not just the decline of violence, this is it.” ―Steven Pinker, Johnstone Professor of Psychology at Harvard University and author of The Blank Slate and The Sense of Style: The Thinking Person's Guide to Writing in the 21st Century

“It is difficult to imagine how the arc of morality can bend toward justice without rational examination of the consequences of one's actions. As Michael Shermer passionately describes in this ambitious, thoroughly researched, yet remarkably accessible work of scholarship, the fabric of modern morality derives not from religion, but in large part from secular notions of rational empiricism. This message needs to be shared more broadly for the good our society, and hopefully this book will do just that.” ―Lawrence M. Krauss, Foundation Professor and Director of the Origins Project at Arizona State University, and bestselling author of A Universe from Nothing and The Physics of Star Trek

“Michael Shermer makes the astonishing claim that science, precisely because of its rational, dispassionate, and enlightened attitude towards revealing the truth, has helped to lay the moral groundwork for modern society, pointing the way to a more just and moral world. Instead of being a passive observer to the dance of history and the evolution of ethics, Shermer makes the outrageous claim that science has in fact been one of the principle actors. Bravo, I say.” ―Michio Kaku, theoretical physicist, author of the best seller The Future of the Mind, and Physics of the Future

“Michael Shermer argues that science, reason, and critical thinking come first; these are the ideas that produce stable, peaceful democracies. He documents and assesses society's successes and failures through the troubled history of humankind--and he's relentless. He connects the arc of the rise of reason and science with a country's economic success, and the overall worldwide decline in violence and suppression of our fellow humans, especially women. If you are religious, have a look. Shermer takes your faith to task and celebrates science as a path to the better moral future that citizens everywhere long for.” ―Bill Nye, The Science Guy, CEO, The Planetary Society

“The Moral Arc displays the impressive depth of Michael Shermer's scholarship, wisdom and empathetic humanity, and it climaxes in a visionary flight of futuristic optimism. A memorable book, a book to recommend and discuss late into the night.” ―Richard Dawkins, author of The Selfish Gene and The God Delusion