There's no greater challenge and there is no greater honor than to be in public service.

In any country, if you don't have countervailing institutions, the power of any one president is problematic for democratic development.

Your friends and your family, if you're close to them, they won't let you get too far from who you were or from who you are. And so I love staying close to people who've always known me. That's probably the best leavening that you could possibly have.

You know, I look at Vladimir Putin as somebody who is an eye-for-an-eye kind of person. We questioned the legitimacy of his election in 2012, Secretary Clinton did - rightly, by the way. It did have - it was quite fraudulent.And so I think he's saying now, I'm going to show you that I can do the same thing.

I worry that the weakness - particularly of our public schools - is going to make that less and less true for everybody. And if we ever lose that as our core, then we're going to lose our confidence. We're not going to lead. We're going to protect. We're going to turn inward. That would be very bad for the world. So as a former Secretary of State, I think I can advocate for education as a national security priority.

Our work has only begun. In our time we have an historic opportunity to shape a global balance of power that favors freedom and that will therefore deepen and extend the peace. And I use the word power broadly, because even more important than military and indeed economic power is the power of ideas, the power of compassion, and the power of hope.

I don't think that anybody could have predicted that these people would take an airplane and slam it into the World Trade Center, take another one and slam it into the Pentagon, that they would try to use an airplane as a missile.