"It is important to be a little bit crazy."

"I think sometimes people think that the way you make progress is to take very small steps. I don't think that's how most progress happens."

"Maybe we should build a city."

"We're not trying to be a monopoly. We're trying to make the world a better place."

"The idea that everyone should slavishly work so they can do something else later on in life is just not how I think about it."