The Moral Arc: How Science and Reason Lead Humanity toward Truth, Justice and Freedom by Michael Shermer. "This book came as a recommendation from an uncle who is an atheist and an engineer. If you’re either and want an ‘atta boy’ for your beliefs, this is your book. From what I understand, it is a classic in that space. For me, a Christian and conservative, it provided insight into how others think and why. It’s long and wanes at time but backs up theory with facts and history."
