When somebody challenges you, fight back. Be brutal, be tough.

Predictability would also seem to inspire confidence that a President [Donald] Trump would refrain from deciding to respond with overwhelming force when he is in a negative spiral and out of patience with a country or terrorist organization that is challenging the U.S., which he may interpret as mounting a challenge to himself personally.

In America, we don't even have a border. It's an open sieve.

Other people have to understand where we are coming from, including our allies. Our allies have taken advantage of us.

Hillary [Clinton] is hitting me with tremendous commercials. Some of it's said in entertainment. Some of it's said - somebody who's been very vicious to me, Rosie O'Donnell, I said very tough things to her, and I think everybody would agree that she deserves it and nobody feels sorry for her.

We have trade with China. We lose hundreds of billions of dollars a year on trade with China. They know how I feel. It's not going to continue like that. But if China helps us, I feel a lot differently toward trade. A lot differently toward trade.

I am for massive oil and gas and everything else and a lot of energy. Vladimir Putin can't love that. I am for the strongest military that the United States ever had. Putin can't love that. But Hillary Clinton was not for a strong military. And Hillary, my opponent, was for windmills. And she was for other types of energy that don't have the same capacities, at this moment, certainly.