In order to have the best intelligence in the world to know who the terrorists are and where they are and what they're plotting, you've got to have the best cooperation you've ever had in the world.

I get always a little uptight when I hear politicians say how exceptional America is.

If the tea party folks would go out there and get angry because they think their taxes are too high, for God's sake, a lot of citizens ought to get angry about the fact that they're being killed and our planet's being injured by what's happening on a daily basis by the way we provide our power and our fuel and the old practices that we have. That's something worth getting angry about.

You'd be amazed at the number of people who want to introduce themselves to you in the men's room. It's the most bizarre part of this entire thing.

You can lead a horse to water, but you can't make it drink.

I will never conduct a war or start a war because we want to; the United States of America should only go to war because we have to. And if you live by that guidance, you'll never have veterans throwing away their medals or standing up in protest.

What Donald Trump is doing is serving the polluters and serving a narrow group of ideological interests. That's not leadership. That's abdication of responsibility, and this step does not make America first. It makes America last.