Dacher Keltner, professor of psychology, USC Berkeley, author of BORN to be GOOD, The Science of a Meaningful Life, is director for the Greater Good Science Center committed to understanding positive emotions; and coeditor of Greater Good magazine.
Drawing on humans facial expressions, and their meaning, social psychologist Keltner sheds new light on the jen ratio (the balance of good and evil in your life). It seems that the slightest of smiles are encoded signals of our innate capacity to engage with others in cooperative communities, and that survival is actually a matter of who is the kindest.