You have to test your ideas in a public forum.

You show people what you're willing to fight for when you fight your friends.

If you believe you can make a difference, not just in politics, in public service, in advocacy around all these important issues, then you have to be prepared to accept that you are not going to get 100 percent approval.

I feel like I have had the most amazing life in my public service.

My biggest, you know, regret is what happened in Benghazi. It was a terrible tragedy losing four Americans - two diplomats and, now it's public so I can say, two CIA operatives.

If you're not comfortable with public speaking - and nobody starts out comfortable; you have to learn how to be comfortable - practice. I cannot overstate the importance of practicing. Get some close friends or family members to help evaluate you, or somebody at work that you trust.