Dacher Keltner is Professor of Psychology and the Director of the Greater Good Science Center at the University of California, Berkeley. He has taught social psychology for the past 21 years and is the recipient of the Distinguished Teaching Award for Letters and Sciences. His research focuses on the prosocial emotions (such as love, sympathy, and gratitude), morality, and power. Other awards include the Western Psychological Association s award for outstanding contribution to research, the Positive Psychology Prize for excellence in research, and the Distinguished Mentoring Award at UC Berkel...