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

"The future belongs to the innovators, the entrepreneurs, the risk-takers, and the dreamers."

"I learned to stop thinking about the world in terms of black and white, and started thinking about it in shades of gray."

"I'm a pretty good cook. I make a mean chili. And I make a pretty good grilled cheese sandwich."

"I’m really good at killing people."