"I was brought up to believe that the only way to really understand something is to build it."

"I don't understand anything in biology. I don't understand anything in chemistry. I don't understand anything in mathematics. I don't understand anything in physics. I don't understand anything in any…"

"I would often go to these conferences where they would talk about the ultimate theory, and I would always say, 'What's the ultimate experiment?'"

"I don't know anything, but I do know that everything is interesting if you look at it deeply enough."

"I would rather have a world with five billion people that didn't know how to read than a world with five billion people that all knew how to read and all thought the same thing."