People have really gotten comfortable not only sharing more information and different kinds, but more openly and with more people - and that social norm is just something that has evolved over time.

If things aren’t breaking, then you’re not moving fast enough. People learn by making mistakes.

Building a mission and building a business go hand in hand.

If the original Facebook was the first five minutes [of a conversation] and the stream was the next 15, what I want to show you today is the rest-the next few hours of a deep engaging conversation.

There are many machines throughout history that were built to do something better than a human can.

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.

If Facebook were a country, it would be the 8th most populated in the world, just ahead of Japan.