Everybody knows politics is a contact sport.

Weapons that were designed for soldiers in war theaters don’t belong on our streets.

So if somebody wants to build a coal-powered plant, they can; it's just that it will bankrupt them because they're going to be charged a huge sum for all that greenhouse gas that's being emitted.

In our household, the Bible, the Koran and the Bhagavad Gita sat on the shelf alongside books of Greek and Norse and African mythology

If condoms and potentially microbicides can prevent millions of deaths [from AIDS], they should be made more widely available. I know that there are those who, out of sincere religious conviction, oppose such measures. And with these folks, I must respectfully but unequivocally disagree.

There's a whole generation coming up behind us that was engaged, inspired, worked for change during the course of my presidency, saw what was possible.

If Iran cheats, the world will know it.