To explain the unknown by the known is a logical procedure; to explain the known by the unknown is a form of theological lunacy.

Most people don't form a self and then lead a life. They are called by a problem, and the self is constructed gradually by their calling.

If I had to fault President [Barack] Obama, I would say that sometimes governs like a visitor from a morally superior civilization.

I generally think debates within a party should not be treated as a scandal. They should be treated as a sign of strength, to be honest.

Empathy makes you more aware of other people's suffering, but it's not clear it actually motivates you to take moral action or prevents you from taking immoral action.

We have the choice to choose how we're going to educate our emotions.

If Donald Trump is just tweeting about a union guy, then he's just being the bully we have seen. But if he uses the power of the presidency to back up some of those tweets and he's really, really coming down with a hammer on people he doesn't like using the power of the presidency, then we're seeing something very new and very different.