Everybody has a product to sell—no matter whether you’re an employee, a founder, or an investor. It’s true even if your company consists of just you and your computer. Look around. If you don’t see any salespeople, you’re the salesperson.

Forget startup companies. The next frontier is startup countries.

Secrets are hard but solvable problems and we should talk about them. It's hard to work toward a radically better future if you don't believe in secrets.

Had the people who started Facebook decided to stay at Harvard, they would not have been able to build the company, and by the time they graduated in 2006, that window probably would have come and gone.

Rivalry causes us to overemphasize old opportunities and slavishly copy what has worked in the past.

In the U.S., we fundamentally need to do new things, which I think is harder for the government to do. And moreover, it is not something our government actually is inclined to particularly do.

There's been a lot companies that have shown "zero to one" kind of growth in the computer, internet software age. Facebook and Google are zero to one companies. Apple's iPhone was the first smartphone that really works, and of course, then you scale it horizontally, but the vertical component was really critical. Space X would also be one.