We can have enough clean energy to power every home.

The challenge is to practice politics as the art of making what appears to be impossible, possible.

As president, I will take that work, that bipartisan work, that finding common ground, because you have to be able to get along with people to get things done in Washington.

The only years [of Donald Trump's] that anybody's ever seen were a couple of years when he had to turn them over to state authorities when he was trying to get a casino license, and they showed he didn't pay any federal income tax.

Don't tear other people down. Lift people up.

A four-year degree shouldn't be the only path to a good-paying job.

What King Abdullah of Jordan said is essentially the war against ISIS is a war for the soul of Islam. And it must be Muslim troops on the ground that will destroy ISIS, with the support of a coalition of major powers - U.S., U.K., France, Germany and Russia.