"Success is a lousy teacher. It seduces smart people into thinking they can't lose."

"I believe in innovation and that the way you get innovation is you fund research and you learn the basic facts."

"If I'd had some idea of the scope of the problem, I'd have been a philosophy major."

"I'm a big believer in the idea that if you have a lot of wealth, you have a responsibility to give back to society."

"The risks created by artificial intelligence can seem overwhelming, but we've done it before."