In this episode we’re talking about how what you believe— about yourself, or about the world — can become a self-fulfilling prophecy. So if you believe the world is a cold and unforgiving place, it can become that way. And if you believe that you have limited capacities for kindness, you can, in effect, make it so.

Our guest is Jamil Zaki, who is making his second appearance here on the show. Jamil is a professor of psychology at Stanford University and the director of the Stanford Social Neuroscience Lab. He is a leading expert on empathy and the author of the...