"A Stanford psychologist offers a bold new understanding of empathy, and shows how we can expand our circle of care, even in these divisive times Empathy is in short supply. Isolation and tribalism are rampant. We struggle to understand people who aren't just like us, but find it easy to hate them. Studies show that we are less caring than we were even thirty years ago. In 2006, Barack Obama said that the United States is suffering from an "empathy...