I have spoken with people at the highest level of intelligence. And I asked them the question, "Does it work? Does torture work?" And the answer was, "Yes, absolutely."

Don't get sidetracked. If you do get sidetracked, get back on track as soon as possible. Ultimately sidetracking kills you.

We need loyal people in this country. We need fighters in this country. We don't need weak people. We have enough of them.

If we don't get the deal we want, we leave NAFTA and start over to get a much better, a much more fair deal because right now, we're a one-way highway into Mexico, a one-way highway .

Secretary [Hillary] Clinton and others, politicians, should have been doing this for years, not right now, because of the fact that we've created a movement. They should have been doing this for years. What's happened to our jobs and our country and our economy generally is - look, we owe $20 trillion. We cannot do it any longer.

I've been all over the world. I've dealt with foreign countries. I've done very well, as an example, tremendously well dealing with China and dealing with so many of the countries that are just ripping America. They are just taking advantage of us like nobody's ever seen before.

If you talk about people that lie, this Ted Cruz, this is the biggest liar I've ever seen.