I mostly built stuff that I liked.

We also have a dog. His name's Beast. He's a sheepdog. He's super cute. I love him.

What really motivates people at Facebook is building stuff that they're proud of.

People can be really smart or have skills that are directly applicable, but if they don't really believe in it, then they are not going to really work hard.

In the olden times, privacy was good. Today people want to share, people are more open.

Right now, with social networks and other tools on the Internet, all of these 500 million people have a way to say what they're thinking and have their voice be heard.

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.

I think people tend to be worried about every new technology that comes along.

A guy who makes a new chair doesn't owe money to everyone who ever built a chair.

This is a perverse thing, personally, but I would rather be in the cycle where people are underestimating us. It gives us latitude to go out and make big bets that excite and amaze people.

Berlin definitely has one of the most vibrant of the startup scenes that I have seen. Not really just across Europe, but across the whole world in terms of cities. It's an interesting dynamic.

If a product costs $10,000 or $20,000 it has limited use. This is what the first computers cost! Only when almost everyone is able to afford it will it be a real thing.

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.

Advertising works most effectively when it's in line with what people are already trying to do.

A beautiful body perishes, but a work of art dies not.

“Experience does not err. Only your judgements err by expecting from her what is not in her power.

Art is never finished, only abandoned.

It is easier to resist at the beginning than at the end.

Life well spent is long.