When I initially presented some of my ideas about the power of compassion in success and achievement, my critics pointed out that Darwinism made my argument weak: It was, in their way of thinking, the Jenga piece that would crash my faulty tower of compassion. I quickly acquired as many of Charles Darwin’s works as possible and carefully read through them searching for the Jenga pieces that could take down my argument.

Instead, I found that most of Charles Darwin’s work, espe­cially “The Descent of Man,” not only supports the general argument of this book; it doesn’t support the idea of…