There's about 100 different cancers in a cancer cell. And so what we're finding out is, they're finding out ways to deal with one or two of the cancers there, with certain medicines. But they don't know why, if you have that cancer and I have that cancer, and I get the therapy and you get it, I don't live and you live. That - they don't know why.

A gaffe in Washington is someone telling the truth, and telling the truth has never hurt me.

The average voter out there understands that the next president is going to have to be prepared to immediately step in without hesitation and end our involvement in Iraq. It's very difficult to figure out how to move on to broader foreign policy concerns without fixing Iraq first.

The one place that David is equal to Goliath is in the Supreme Court.

In the good old days when I was a senator, I was my own man.

I don't expect the government to solve my problems, but at least I expect them to understand it.

Should we have border security there? Yes. But the idea of the United States erecting a wall for the world to see makes a lie of everything we say about ourselves. It's a little bit like why the President [Barack Obama] and I feel so strongly about closing Guantanamo. It is inconsistent with who we are.