The problem is that at a lot of big companies, process becomes a substitute for thinking. You're encouraged to behave like a little gear in a complex machine. Frankly, it allows you to keep people who aren't that smart, who aren't that creative.

I've always wanted to be part of something that would radically change the world. . . . People forget the power of inspiration. All of humanity went to the moon with the Apollo missions. The issue was cost. There was no chance to build a base and create frequent flights. That's the problem I would like to solve.

I do think there is a lot of potential if you have a compelling product and people are willing to pay a premium for that. I think that is what Apple has shown. You can buy a much cheaper cell phone or laptop, but Apple's product is so much better than the alternative, and people are willing to pay that premium.

That's my lesson for taking a vacation: vacation will kill you.

I think there are too many smart people pursuing internet stuff, finance, and law. That is part of the reason why we haven't seen as much innovation.

Physics is a good framework for thinking. ... Boil things down to their fundamental truths and reason up from there.

Silicon Valley has some of the smartest engineers and technology business people in the world.