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

All of my friends who have younger siblings who are going to college or high school - my number one piece of advice is: You should learn how to program.

People don't care about what someone says about you in a movie--or even what you say, right? They care about what you build.

I started the site when I was 19. I didn't know much about business back then.

Mobile is a lot closer to TV than it is to desktop.

I know it sounds corny, but I’d love to improve people’s lives, especially socially… Making the world more open is not an overnight thing. It’s a ten-to-fifteen-year thing.

The thing that we are trying to do at Facebook is just help people connect and communicate more efficiently.

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.

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.

I mostly built stuff that I liked.

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.