In accounts of men in battle, there is an incredible adrenaline rush from group-versus-group conflict. The fervor and passion of partisans is clearly rewarding; and if it's rewarding, it involves dopamine; and if it involves dopamine, then it is potentially addictive.

Economic issues are just as much moral issues as social issues.

People are wrong when they say that everything should be more diverse, even, say, rock bands. It's an error, an overgeneralization.

It only takes twenty generations of selective breeding to create large differences or appearance and behavior in other mammals.

Dividing into teams doesn't necessarily mean denigrating others. Studies of groupishness have generally found that groups increase in-group love far more than they increase out-group hostility.

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.

Happiness is not the shallow state of feeling pleased and chipper all the time. Happiness is the state of a human being that has achieved cross-level coherence within herself, and between herself and the people, challenges, and institutions around her. Happiness comes from between.