Defeating human trafficking is a great moral calling of our time...

I'm not personally fearful, but I look out, and there are a number of things that concern me, and I'm hopeful that we can overcome them.

Democratic openings that come about in that way - the overthrow of a totalitarian government by external powers - it makes it really hard to make those first steps toward democracy.

Separation of powers is a problem for foreign policy.

You cannot be on one hand dedicated to peace and on the other dedicated to violence. Those two things are irreconcilable.

I get letters from kids from all over the country. I always try to answer them because there were people I looked up to in my youth and just wanted to be in contact with. It's also important to realize that you find your role models in a lot of different places. I've never believed that your role models have to look like you. You can find them in all sort of colors, shapes and sizes.

Human beings are not perfect. Their institutions are not perfect, but they have to keep trying. And America has to help people keep trying.