With a normal president like President [Barack] Obama, he says a word, and that's because there has been some thought that he's done and there had been policy papers and there's been aides and there's been advisers and then there is a connection to an actual set of policies. And so, the words like have roots into actual stuff.

Economists sometimes do try to reduce behavior to law-like predictability. But people respond differently to different primes, to different contexts even from one moment to the next. We possess multiple selves that are aroused by different circumstances.

Maybe you're willing to tolerate a lot of bigotry from Donald Trump if you say, just change things, just change things.

We still are America though. We're still a country that is a country of social mobility. We're still a country of immigrants. We're still a country with common ancestors. And reviving the civics of America and the idea that we're going to be united, at least not right now, but in some common future, and talking in that hopeful way that Martin Luther King did, that Abraham Lincoln did, seems to me that's the way.

Things that change history tend to be organized.

Politics is based on social identity, and so, again, there is going to be differences between rural and urban and between left and right.

Russia has a very sophisticated, advanced attack on U.S. businesses and U.S. government and U.S. institutions. And it's not like Donald Trump is going to be walking away from this. He will be spending a lot of time on it, if he's any sort of normal president.