Some comedians really are funnier than others. Some people really are more beautiful than others. But these are true only because of the kinds of creatures we happen to be; the perceptual apparatus - apparati - that we happen to have.

Legalizing homosexuality is not the first step on a slippery slope to legalizing everything.

There are a couple of watersheds in human evolution. Most people are comfortable thinking about tool use and language use as watersheds. But the ability to play non-zero-sum games was another watershed.

I think the greatest work in social psychology from the 1950s and '60s is enormously important. I wish every high school kid could take a course in social psychology. I think we're making enormous strides in understanding the brain. These aren't yet giving us great insights, but I feel like we're on the verge of it. In five or ten years this basically searching the brain is really going to change things.

Suppose you read about a pill that you could take once a day to reduce anxiety and increase your contentment. Would you take it? Suppose further that the pill has a great variety of side effects, all of them good: increased self-esteem, empathy, and trust; it even improves memory. Suppose, finally, that the pill is all natural and costs nothing. Now would you take it? The pill exists. It is meditation.

In college, I was dead set on being a philosophy major, because I wanted to figure out the meaning of life. Four years later I realized philosophy had really nothing to say about the meaning of life, and psychology and literature are really where it's at.

Psychotherapy can help some people, especially people who are neurotic, who are always making problems for themselves. We are like a rider on an elephant. We can steer the elephant, and if he's not busy, he'll go where we want, but if he has other desires, he'll go where he wants. They need to get a better relationship between the rider and the elephant. In part, you get it just from watching yourself stumble around in life, make mistakes, then read a little psychology and stop blaming yourself. Realize that I am flawed. I am complicated. I am divided, and I'm doing the best I can.