If you're always in the company of people who agree with you, you're going to think of people who don't agree with you as venal or stupid. I constantly tell my students that if they're in the company of people who always say "amen" to what you say, find other company. And that is the source of illiberalism, when you are unable to listen to someone who thinks differently. That's when democracies are in trouble.

We have to recognize that the reason that the global order that we've enjoyed and almost take for granted over the last several years exists is that after World War II, the United States and its allies tried to build an antidote to what they had seen between World War I and World War II. There, they'd seen protectionism, beggar-thy-neighbor trading policies, so they said, we'll build an open international economy. And they did that.

The United States has no credible evidence that Iraq moved weapons of mass destruction into Syria early last year before the U.S.-led war that drove Saddam Hussein from power.

When I said I had always hoped to marry in my race, I really do mean that. That doesn't mean I absolutely wouldn't marry outside of it, but there's a culture and traditions to maintain, and I have great pride in them, and I always thought it would be wonderful to share that with somebody of my race.

Leading in a complex world means recognizing the simple things you can do to make things better.

I didn't run for student council president. I don't see myself in any way in elected office. I love policy. I'm not particularly fond of politics.

I'm a great believer in the fact that as you get to know someone, it matters not what religious background they have, or what their nationality is, or where they came from. And I think that's how Americans really do relate to each other on a personal level.