I think both of them [Donald Trump and Bernie Sanders] have [chances] because they are not the establishment, not for who they are.

And if I were the president, I'd go out there and I'd emphasize the things I have done, and I'd say, 'Some things haven't worked, and I'm sorry about that, but I keep trying.' And I'm - and I think the president is a very viable candidate, and you're going to have a real horse race here no matter who the Republican nominee is.

We need to have more taxes, not less, and we need the taxes we have, certainly, to provide services - for defense and education and health care. We should not cut money here in order to cut taxes.

[Jeb Bush] could, as I describe it, run the railroad.[John] Kasich could run the railroad. Hillary Clinton can run the railroad. Running the railroad is the most important thing. You have got 4 million employees; you've got to make the system work, and it doesn't work very well.

I'm worried about the world because of nuclear proliferation.

In 1975, Congress passed a law requiring fuel efficiency standards to double over 10 years, with incremental targets that auto manufacturers were required to meet. That was the responsible approach, and it worked. But since 1985, we've done nothing - even as technology has moved at light speed.

Don't be afraid to assert yourself, have confidence in your abilities and don't let the bastards get you down.