Any time an elected official in the world we're in today that appears so dysfunctional challenges a core constituency not of their opponent but of their own political base, I think we should pause and give them credit.

I think it's very sad that CNN leads Jeb Bush, down a road by starting off virtually all the questions, "Mr. Trump this, Mister" - I think it's very sad. I watched the first debate, and the first long number of questions were, "Mr. Trump said this, Mr. Trump said that. Mr. Trump" - these poor guys - although, I must tell you, [Rick] Santorum, good guy. Governor [Mike] Huckabee, good guy. They were very nice, and I respect them greatly. But I thought it was very unfair that virtually the entire early portion of the debate was Trump this, Trump that, in order to get ratings, I guess.

I'm not an expert on the ways of Washington [but] it makes no sense to me that we're not funding control of our border.

Banning all Muslims will make it harder for us to do exactly what we need to do, which is to destroy ISIS. We need a strategy. We need to get the lawyers off the back of the warfighters.

Who among us has never looked up into the heavens on a starlit night, lost in wonder at the vastness of space and the beauty of the stars?

We can grow economically and restore America's leadership in the world, so that everybody has a chance to rise up.

I focus most of my attention on Hillary Clinton and her disastrous policies. I mean, there's a real danger in this election. Electing Hillary Clinton in an era where we now are so pessimistic about the future, would double down on [Barack] Obama economics and a failed foreign policy - so most of my attention is about my record and about defeating Hillary Clinton.