Facebook is inherently viral. There are lots of sites that include a contact importer, and for lots of them it doesn't really make sense. For Facebook it fits so well. It wasn't until a few years in that we started building some tools that made it easier to import friends to the site. That was a huge thing that spiked growth.

VR is a very intense visual experience and having the most powerful PC is the only way to deliver certain experiences.

We've changed our internal motto from "Move fast and break things" to "Move fast with stable infrastructure."

My goal was never to just create a company. A lot of people misinterpret that, as if I don't care about revenue or profit or any of those things. But what not being just a company means to me is not being just that - building something that actually makes a really big change in the world.

Today we can only hear the voices and witness the imaginations of one-third of the world's people. We are all being robbed of the creativity and potential of the two-thirds of the world not yet online. Tomorrow, if we succeed, the Internet will truly represent everyone.

I personally don't invest in a lot of companies because I think it would be a conflict of interest and Facebook doesn't typically either.

Free basic internet access should be like dialing 911 in the US or 100 in India.