The world isn't set up equally, and the first billion people using Facebook have way more money than the rest of the world combined.

It used to be the case, like, you'd switch jobs, and then maybe you wouldn't keep in touch with all the people that you knew from that old job. Just because it was too hard. But one of the things that Facebook does is it makes it really easy to just stay in touch with all these people.

People often say that it is easier to predict the way things are going to be 10 to 20 years in the future than to predict how it is going to be 3 years from now.

Betting completely on HTML5 is one of the, if not THE biggest strategic mistake we've made.

It is important for young entrepreneurs to be adequately self-aware to know what they do not know.

I made so many mistakes in running the company so far, basically any mistake you can think of I probably made. I think, if anything, the Facebook story is a great example of how if you're building a product that people love you can make a lot of mistakes

So many businesses get worried about looking like they might make a mistake, they become afraid to take any risk.