I don't buy stocks, I make stocks.

The smartest people are constantly revising their understanding, reconsidering a problem they thought they’d already solved. They’re open to new points of view, new information, new ideas, contradictions, and challenges to their own way of thinking.

I'm not saying that advertising is going away. But the balance is shifting. If today the successful recipe is to put 70 percent of your energy into shouting about your service and 30 percent into making it great, over the next 20 years I think that's going to invert.

A company shouldn't get addicted to being shiny, because shiny doesn't last.

But there's so much kludge, so much terrible stuff, we are at the 1908 Hurley washing machine stage with the Internet. That's where we are. We don't get our hair caught in it, but that's the level of primitiveness of where we are. We're in 1908.

Where you are going to spend your time and your energy is one of the most important decisions you get to make in life.

Am I going to regret leaving Wall Street? No. Will I regret missing the beginning of the Internet? Yes.