A man who doesn't think differently from his time and environment can't grow beyond his time and environment.

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.

Many a bad habit is developed through overindulgence, and many a good one by chastisement; therefore, beat your son as well as your pupil; never indulge them.

If my edge is dull, my sword is dull, and I don't want to fight another guy whose sword is dull. If you've got two steel swords going back and forth hitting each other, what's gonna happen? Both of them are going to get sharper. Everybody that's in the industry has lost their edge.

It creeps me out sometimes to think of the person I was. I was a terrible person. I was mean to people.

Don't you think it's sometimes wise not to grow up.