Survival of the FriendliestBy: Brian Hare, Vanessa Woods Brilliant, eye opening, and absolutely inspiring and a riveting read. Cass Sunstein, author of How Change Happens and co author of Nudge What is the secret to humanitys evolutionary success? Could it be our strength, our intellect or something much nicer? From the authors of New York Times bestseller The Genius of Dogs comes a powerful new idea about how friendliness is the key factor in the flourishing of our species.