I think that Joe Biden is qualified in many respects. But I do point out that he's been wrong on many foreign policy and national security issues, which is supposed to be his strength.

I spent several years in a North Vietnamese prison camp in the dark, fed with scraps. Do you think I want to do that all over again as vice president of the United States? The vice president has two duties. One is to break a tie in case of a tie vote in the United States Senate... The other is to inquire daily as to the health of the president. Neither one of those are very challenging as compared to being able to live for a good part of the time in the state of Arizona.

Every time there's been an out-of-bounds remark made by a Republican, no matter where they are, I have repudiated them.

I'm a proud Reagan conservative.

The majority of [the troops in Iraq] is that feel they're doing the right thing and their parents who have also made sacrifices, generally speaking, and their proud of the services of their sons and daughters.

Hillary [Clinton] saying we're never going to put boots on the ground in Iraq, we never going to put boots on the ground in Syria petrified me, simply because, why - what if this continues despite out of control.

We have many advantages in the fight against global warming, but time is not one of them. Instead of idly debating the precise extent of global warming, or the precise timeline of global warming, we need to deal with the central facts of rising temperatures, rising waters, and all the endless troubles that global warming will bring. We stand warned by serious and credible scientists across the world that time is short and the dangers are great. The most relevant question now is whether our own government is equal to the challenge.