Learning was a by-product of her search for pleasure

It's important for presidents to emotionally connect, with the country in times of crisis, but also with people in Washington. If you can't emotionally connect - and [Barack] Obama is not the greatest, but he can at least do it - then people won't be with you when the times are hard.

Mitt Romney knows a lot. He's a very professional - a consummate professional.

Live life as a series of revelations

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.

One of the things I think about with Donald Trump is what are his words actually attached to? With Trump, I'm not sure the words have roots. They are emanations of his psyche, but has he thought it through? Is there an argument, is there a policy implication?

Friendship allows you to see your own life but with a second sympathetic self.