In the developed world, technological progress means that you can have a situation where there's growth, where there's a way in which everybody can be better off over time.

It is sort of a bit of a caricature of capitalism, that it's always this zero-sum game where you have winners and losers. Silicon Valley, the technology industry at its best, creates a situation where everybody can be a winner.

Great tech opportunities happen only once.

When you are starting a new business you don't want to go after giant markets. You want to go after small markets and take over those markets quickly.

I'm in favor of free trade, but I think if you had to make a choice between having technological progress versus free trade, you had one or the other, you should always pick technological progress. I think it's an incredibly important variable for creating more prosperity.

Twitter is hard to evaluate. They have a lot of potential. It's a horribly mismanaged company — probably a lot of pot-smoking going on there. But it's such a solid franchise it may even work with all that.

Thinking about how disturbingly herdlike people become in so many different contexts - mimetic theory forces you to think about that, which is knowledge that's generally suppressed and hidden. As an investor-entrepreneur, I've always tried to be contrarian, to go against the crowd, to identify opportunities in places where people are not looking.