Humans evolved to look out for our own interests but also developed the capacity for completely selfless action when we closely identify with a group. When we feel as much concern for another's wellbeing as we do for our own, you might call this a sense of "kinship." The Buddha taught us to practice extending Metta, or loving-kindness – just as a mother would feel for her only child – to all living beings without discrimination. We will discuss the evolutionary psychology perspective on human altruism, ways that our sense of kinship gets activated, and the implications for the way we operate in the world.