You have to have a strong sense of your values and a strong sense of who you are, because there are a lot of events and a lot of people who will pull you in this direction or that direction.

I find that the great majority of public servants across the entire political spectrum come because they believe in the United States and they want to change the world.

We're all products of our environment, and I suspect that strength of will - the feeling, "I'm going to be able to do whatever you put in front of me" - is honed in an environment where not everything is easy. Ironically, growing up in that environment, you don't have a sense of aggrievement or entitlement. You just have a sense of overcoming.

Most of the people who were responsible for 9/11 are now in custody or have been killed. But there are others, and they plot and they plan, and they hope to pull it off again. And while we have to be right 100 percent of the time, they only have to be right once. So there's no way to overreact to that.

I remember classes in college where the professor was espousing certain theories about how blacks were inherently less intelligent. But I learned a long time ago to give people the benefit of the doubt, not to assume that somebody was reacting to you because of race.

It is a dangerous thing to ask why someone else has been given more. It is humbling - and indeed healthy - to ask why you have been given so much.

Most days are not overwhelmingly successful in your life. And what really marks whether you're going to be successful is how well you deal with the bad days, not how well you deal with the good ones.