The one sure way to success is to know everything you can about what you do.

I'd be the last one to use the nuclear weapons, because that's sort of like the end of the ballgame.

We're spending on numerous countries - very substantial countries, you know the countries we're talking about - but we're defending them for a fraction of the cost.

Honestly, that puts a lot of weight on your shoulders because you're representing so many great people who want to see so much. And they're hungry for ... I hate to use the word change because [Barack] Obama used to use that word ... but they're hungry for real change; they're hungry for making things right.

My administration will end the sanctuary cities that have resulted in so many needless deaths. Cities that refuse to cooperate with federal authorities will not receive taxpayer dollars, and we will work with Congress to pass legislation to protect those jurisdictions that do assist federal authorities.

Vladimir Putin is really very much of a leader. I mean, you can say, oh, isn't that a terrible thing - the man has very strong control over a country.

Change has to come from outside our corrupt system.