I think Facebook's biggest problem is the glut of information that Facebook's power users are overwhelmed with.

It’s not cool. I think being a wealthy member of the establishment is the antithesis of cool. Being a countercultural revolutionary is cool. So to the extent that you’ve made a billion dollars, you’ve probably become uncool.

It would be incredibly presumptuous and self-serving of me to believe that Facebook was the end of history. The only way it could possibly be the end of history is if it becomes some sort of artificial super intelligence that takes over the world.

The leader of a company needs to have a decision tree in his head - if this happens, we go this way, but if it winds up like that, then we go this other way.

What comes after the revolution is inevitably bureaucracy. Whoever wins the revolution builds a bureaucracy

There is no simple answer to what I think.

The market is ridiculously overcrowded with early stage investors. This results in a talent drain, where the best talent gets diffused and work for their own startups.