I have never met a successful person that was a quitter. Successful people never, ever, give up!

When I started out in business, I spent a great deal of time researching every detail that might be pertinent to the deal I was interested in making. I still do the same today. People often comment on how quickly I operate, but the reason I can move quickly is that I've done the background work first, which no one usually sees. I prepare myself thoroughly, and then when it is time to move ahead, I am ready to sprint.

We've got to make America strong again. And right now, we are not strong. Believe me. We have a depleted military. We have the greatest people in the world in our military. But it is very sadly depleted.

Inequality is going to be a big issue, but competence is going to be the biggest issue. [People] want to see somebody that's super-competent and that's me.

As part of my pledge to restore safety for the American people, I have also directed the defense community to develop a plan to totally obliterate ISIS. Working with our allies, we will eradicate this evil from the face of the Earth.

Hillary Clinton's got bad judgment, and honestly, so bad that she should never be president of the United States.

If we could get Russia to help us get rid of ISIS, if we could actually be friendly with Russia, wouldn't that be a good thing? Is that so bad?