I want the ability to monitor high-tech communications among far-flung terrorists. I want to be able to have our people learn their plans before they strike. That's the key.

Posterity is the world to come; the world for whom we hold our ideals, from whom we have borrowed our planet, and to whom we bear sacred responsibility. We must do what America does best: offer more opportunity to all and demand responsibility from all.

I figured if I could get really good people who were going to be able to have a big impact in the world over the next decade to come together once a year for ten years and actually sign a pledge to take action themselves, if we did that every year for ten years we could do a lot of good in the world. That's the difference between my meeting and any other. If you don't want to promise to do something, don't come to my meeting, stay home.

I did a lot of work on energy efficiency at the White House. By the time I left we had taken the equivalent of six hundred cars a year off the road in reduced greenhouse gas emissions just in the White House complex.

If a President of the United States ever lied to the American people, he should resign.

Sarah, there's a government inside the government, and I don't control it.

If we disagree and I think I'm right, I just go ahead and do what I think is right. And then she tells me, 'I told you so.'