If we topple [Bashar] Assad, the result will be ISIS will take over Syria, and it will worsen U.S. national security interests.

I promise you, Donald [Trump], there's nothing about you that makes anyone nervous.

What I am endeavoring to do is simply speak the truth, speak common-sense values, free market principles and the Constitution. For every question, the Constitution is my touchstone.

Every candidate is going to come to you and say they are the most conservative person that ever lived.

I looked at the pilgrims coming to America. In their first year, they decided to try a communist experiment. And the first year of the pilgrims, they established this socialistic concept: 'Well, we have all this land before us - let us all work it together.' Oh, how wonderful it sounded. 'Let us all work it together, and we will share in the produce of the land.' They almost starved to death! Almost half of them died, that very first year.

I don`t get angry often, but you mess with my wife, you mess with my kids, that will do it every time. Donald Trump, you`re a snivelling coward and leave Heidi the hell alone.

He [Donald Trump] said in the debate - he said, gosh, I'm being audited for two years. Then he said three years. Then he said maybe five years. Listen, if there's a problem in his taxes, the voters have a right to know, because come September, October, the general election, folks in the media are going to make a heyday about any problems in his taxes.