Facebook is such a basic utility. It's something that is such a part of peoples' lives, I think it's hard to imagine it going away.

Solving specific problems is what drives me. I am not interested in having a career. I never have been.

I lived on couches for something like six months. I had no home. I was totally broke. I would stay at a friend's house for two weeks, then move because I didn't want to become this permanent mooch.

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.

The transition strategies are more important than understanding what the outcome state will be.

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.

You actually don't want people thinking your product is cool, because then you're a fad.