What the Paris agreement now does is say to China and India and other countries that are potentially polluting, come on board. Let's work together so you guys do the same thing.

I'm so overexposed, I'm making Paris Hilton look like a recluse.

Sustaining the energy and focus involved in doing a good job I think starts to - starts to gets tougher the longer you do it.

I don't think that there's a hard-and-fast deadline. . . .What we have said all along is that this is not an open-ended process, we are not in this just to talk for talk's sake. . . . We expect prompt, concrete steps to be taken over the next couple of weeks.

Civility also requires relearning how to disagree without being disagreeable. Surely you can question my policies without questioning my faith or, for that matter, my citizenship.

You wouldn't know that if you talked to Human Rights Watch or Amnesty International or some of the international activist organizations. Certainly you wouldn't know that if you were talking to some of the writers who criticize our drone policy. But I've actually told my staff it's probably good that they stay critical of this policy, even though I think right now we're doing the best that we can in a dangerous world with terrorists who would gladly blow up a school bus full of American kids if they could.

There are folks who will equivocate. They'll say, 'You know, I'm not a scientist.' Well, I'm not either. But the best scientists in the world know that climate change is happening.