Edit: Bumped up the star rating because I keep coming back to the core points of this book when pondering unrelated topics.

This is a fascinating read that begins by asking why humans have such seemingly infinite potential to be good and evil, taking us down the long path of our evolution. It delves deeply into the theory of self-domestication and how it applies to humans, coming to startling conclusions that put much of human behavior and psychology into perspective. My only gripe is that the ending begins to ramble a bit on the future of our species.