I believe marriage is between a man and a woman. I am not in favor of gay marriage. But when you start playing around with constitutions, just to prohibit somebody who cares about another person, it just seems to me that's not what America's about. Usually, our constitutions expand liberties, they don't contract them.

I am living testimony to the moral force of non-violence. I know there's nothing weak - nothing passive - nothing naïve - in the creed and lives of Gandhi and King.

The only time I get frustrated with activist criticism is if I have recognized them, and invited them to work with me to figure out how we solve this problem that they're concerned about, and either they don't engage out of the sense of purity - "I'm not going to shake his hand" - or you're not sufficiently prepared so you don't even know what to ask for, or you're not being strategic as an activist and trying to figure out how the process has to work in order for you to get what you want.

I've always wanted to come to Greece.

The only resolution is for the aspirations of both sides to be met through two states, where Israelis and Palestinians each live in peace and security. ... Israelis must acknowledge that just as Israel's right to exist cannot be denied, neither can Palestine's. The United States does not accept the legitimacy of continued Israeli settlements.

We’re making new investments in the development of gasoline and diesel and jet fuel that’s actually made from a plant-like substance-algae... We could replace up to 17 percent of the oil we import for transportation with this fuel that we can grow right here in the United States.

I believe in keeping guns out of our inner cities, and that our leaders must say so in the face of the gun manufacturer's lobby.