“I think that's the single best piece of advice: constantly think about how you could be doing things better and questioning yourself.”

“It's not as though we can keep burning coal in our power plants. Coal is a finite resource, too. We must find alternatives, and it's a better idea to find alternatives sooner then wait until we run out of coal, and in the meantime, put God knows how many trillions of tons of CO2 that used to be buried underground into the atmosphere.”

“Great companies are built on great products.”

“I had so many people try to talk me out of starting a rocket company, it was crazy.”

“I've been to Disneyland, like, 10 times. I'm getting really tired of Disneyland.”

“While 9-5 and what happens on the job is important, what happens from 5-9, off the job, is infinitely more important.”

“My most brilliant achievement was my ability to be able to persuade my wife to marry me.”

“I let people fill in the blanks on their own. If they want to think about their ex, that's fine. If they want to think about maybe who one of my exes is, then that's fine. And it might not be right, because I'm the only one who knows what these songs are really about. It's the one shred of privacy I have in the matter.”