I agree completely with Secretary Colin Powell, who said today this is an absurdity. And so I think the American people will know it's an absurdity. I have absolutely no concerns about it whatsoever.

When I spend my time out on the campaign trail, it's usually about what I can do for somebody else. I don't like talking about myself, I don't like the whole atmosphere of how people are judged in American politics too often as to what you say instead of what you do. And so for me it's always about what can I do for you? How can I help you?

Donald Trump is the first candidate ever to run for president in the last 40-plus years who has not released his tax returns, so everything he says about charity or anything else, we can't prove it.

Presidents should be very careful at all times in discussing the use or non-use of nuclear weapons. Presidents since the cold war have used nuclear deterrence to keep the peace, and I don't believe that any president should make any blanket statements with respect to the use or non-use of nuclear weapons.

I can't stand the kind of paralysis that some people fall into because they're not happy with the choices they've made.

I've been really impressed at some of the investments that I've seen in community college and technical schools that are training young people for these jobs in 3D printing and the like.

The Russians and the Chinese have been absolutely clear they don't want to see Iran with a nuclear weapon.