Running a start-up is like eating glass. You just start to like the taste of your own blood.

My interactions with Sorkin were agonisingly weird. He is by far the weirdest person I have ever met. I had dinner with him and a few hours before I got an e-mail from his assistant saying, 'Sean, this does not need to be a long conversation. Aaron is only going to use it to win your trust.'

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.

You can now be a master of your own destiny. I'm not sure why you would sign up with a record label.

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.

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

I focus on things that are the highest value and do them perfectly.