"I am my brother's keeper. I am my sister's keeper."

"There's not a lot of evidence that it's going to work, but I'm an optimist."

"If you're walking down the right path and you're willing to keep walking, eventually you'll make progress."

"I have to say, I've never been accused of being a shrinking violet."

"I think the one thing that I've learned is that, you know, being president is not for sissies. It's a tough job."