Ultimately, the best strategy to ensure our security and to build a durable peace is to support the advance of democracy elsewhere. Democracies don't attack each other.

Music, to me, was - is - representative of everything I like most in life. It's beautiful and fun, but very rigorous. If you wanted to be good you had to work like crazy. It was a real relationship between effort and reward. My musical life experiences were just as important to me, in terms of forming my development, as my political experiences or my academic life.

I experimented with marijuana a time or two.

On Bill Clinton: I have a simple question: Who's the last President to give you a balanced budget?

I spent a lot of time when I was president, trying to end wars, prevent killing, and promote understanding. What I have seen is that peace works better than conflict, and one of the best manifestations of it is in travel and tourism.

President Obama's record on national security is a tribute to his strength, and judgment, and to his preference for inclusion and partnership over partisanship.

When you're president, you have more power to help more people, but you also are the prisoner of circumstances as well, and countervailing political forces more.