“The third historical force has been called the expanding circle, this is a concept that was named by Peter Singer and first endorsed by Charles Darwin more than a century before. The idea is that evolution bequeathed us with a sense of empathy. Unfortunately, by default we apply it only to a narrow circle of family. Over the course of history you can see the circle of empathy expanding…”
Read the entire article via Culture of Empathy Builder: Steven Pinker.