If you attack Trump, he's not gonna sit there and take it. He's an alpha male. He's gonna come right back at you and he's gonna keep coming back at you.

You know how old I am? I'm so old, I remember when Letterman used to be funny and it was presidents who were serious. That's how old I am.

I have a practice of really not talking about the competition. I'm from the old school.

Let me tell you the polls that count, and those are the polls a couple of weeks before the election. That's when the pollsters worry about holding onto their credibility. Those are the polls that everybody remembers.

Folks, let me ask you a question about that. You voted in 2010, 2014. You're part of the Tea Party and you show up and you just vote. Republicans said they needed the House, and you gave it to 'em; then they said they needed the Senate, and you gave it to 'em. Do you feel like winners even after those two elections? Probably not, because you really didn't think the Republican Party was going to change their stripes and start acting on all this.

That cracker made a lot of African-American millionaires.

You're falling into the trap of believing everything that's in the political handbook, and at the top of the list it says you can't do anything without money. [Donald] Trump has.