I'm a strong believer that you have to have an equal opportunity to fail and to try things that are hard. I always tell my students, "Don't just take things that are easy for you. If you're really good at math, don't take just math. Take classes that make you write. If you're a really great writer, but bad at math, take math and make yourself work your way through it."

In the segregated South, education was almost like armor. It was a way to put yourself in a category where even with the slings and arrows and humiliations of racism and segregation, somehow you had better control of the situation. I always said my parents understood that you might not be able to control your circumstances, but they and their parents believed that you could control your reaction to your circumstances.

I talked about the need for American leadership, I talked about the importance of the United States to a more peaceful world, a world that has been quite turbulent in recent years, and needs a strong American anchor.

I was born in segregated Birmingham, Alabama. I didn't have a white classmate till we moved to Denver.

You never cede control of your own ability to be successful to something called racism.

We don't want the smoking gun to be a mushroom cloud.

I'm actually genuinely optimistic about the United States and what's possible in the United States. And when you're out here, you see Americans across racial and economic and socioeconomic lines working together. And you maybe get a little bit less cynical than when you sit in the seat of kind of the epicenter of it all.