I like to pride myself on thinking pretty long term, but not that long term.

Move fast, take risks, it's okay to try big things you're better off trying something and having it not work and learning from that than having not done anything at all.

I mean, we've built a lot of products that we think are good, and will help people share photos and share videos and write messages to each other. But it's really all about how people are spreading Facebook around the world in all these different countries. And that's what's so amazing about the scale that it's at today.

I would only hire someone to work directly for me if I was willing to work for that person.

AI systems will enable doctors to diagnose diseases and treat people better, so blocking that progress is probably one of the worst things you can do for making the world better.

The most important thing is to keep your team as small as possible.

Simply put: we don't build services to make money; we make money to build better services.