The things that make them similar - their machismo, their expansionary braggadocio - is going to turn them I think into bitter and dangerous enemies. We will look back on this moment where we thought Vladimir Putin and Donald Trump were sort of close as a moment of bitter irony, when they get into a schoolyard display against each other, amping up each other's worst tendencies and putting the two countries in some sort of scary position.

When you're running for president you have to take some risks and you've got to show people something fresh and you've got to stay interesting.

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

I do think creating an open free-trade economy but with strong social support is the way to go.

The three people who are most often talked about with Hillary Clinton, whether it's Tim Kaine or Vilsack or Cory Booker, they are three extremely nice people.

Everyone is dividing based on demographic categories.

There certainly is a pattern of administrations that have good transitions, George W. Bush to Barack Obama, and administrations that have really bad transitions, I would say Dwight Eisenhower to John F. Kennedy. I would say this is beginning to look like a bad transition, from Barack Obama to Donald Trump as they begin to argue even at the presidential level, which is more or less unprecedented.