We would betray our values and play into our enemies' hands if we were to treat Muslims differently than anyone else. In fact, to cave to popular sentiment would be to hand a victory to the terrorists, and we should not stand for that.

What goes on in Europe concerns us greatly because, if Europe comes apart, the E.U. comes apart, then you're going to have enormous impact on America, that's a very big trading partner of ours, and people own securities around the world in this day and age.

I think that most of the candidates [for presidency] can't run the railroad, and I still worry that whoever gets elected will have policies designed for political rather than practical reasons.

You can't define what's middle class, what is wealthy, what is poor.

My personal view is, why don't you get out there and try to do something about the things that you don't like, create the jobs that we are lacking, rather than just yell and scream. But if you want to yell and scream, we'll make sure you can do it.

I think [Winston] Churchill said it was " [democracy] the worst of all systems except for all the others." And that's probably true. It's never gone easily.

[Jeb Bush] could, as I describe it, run the railroad.[John] Kasich could run the railroad. Hillary Clinton can run the railroad. Running the railroad is the most important thing. You have got 4 million employees; you've got to make the system work, and it doesn't work very well.