We scientists have way too much a tendency to simplify problems. I guess it actually comes to us naturally. Take the simplest unit, separate out all the confusing, external factors. Study it. Make sure you understand it. And in psychology that means the person studying the individual. But if you want to study our social nature, if you want to study processes that will lead to war and peace, you don't learn all that much by looking at the single individual. A lot of the important things are emergent facts about us, things that you can only see when you get a lot of us interacting.

Liberals are my friends, my colleagues, my social world.

Most of our social nature is like that of other primates - we're mostly out for ourselves.

The president is the high priest of what sociologist Robert Bellah calls the 'American civil religion.' The president must invoke the name of God (though not Jesus), glorify America's heroes and history,quote its sacred texts (the Declaration of Independence and the Constitution), and perform the transubstantiation of pluribus unum.

Liberals tend to be much more concerned about business and corporations as the oppressors. They look to government as the solution. On the Right it's the opposite. They see business as good, as what generates wealth in society, and they see government as the oppressor, which makes it hard for especially small businesspeople.

If you have a personality predisposed to liberalism, you might gravitate more to the artsy crowd or the anti-establishment crowd. And then those peers will affect you, and they will give you values, and you will copy them.

I think that moral philosophy is useful for framing questions, but terrible at answering them. I think moral psychology is booming right now, and we're making a lot of progress on understanding how we actually work, what our moral nature is.