Climate change is such a consequential crisis to everybody in the world.

If you're one of the millions of people who have student debt right now, I'll help you refinance your loans at better rates.

I want to try to counter what Donald Trump says because a lot of it is mean-spirited and would hurt people.

I don't care if you're a liberal icon or a conservative icon. If you are not willing to be active in your democracy and do what is necessary to deal with our problems, I think you should be voted out.

That is the number-one threat we face in the world. And it becomes particularly threatening if terrorists ever get their hands on any nuclear material. So a man who can be provoked by a tweet should not have his fingers anywhere near the nuclear codes, as far as I think anyone with any sense about this should be concerned.

China is starting an English-speaking television network around the world, Russia is, Al Jazeera. And the BBC is cutting back on its many language services around the world.

The candidates we have in this campaign are... the most accomplished, in terms of public service, that we've had since 1960. One of them will be successful.