When I started Facebook from my dorm room in 2004, the idea that my roommates and I talked about all the time was a world that was more open.

Unless you are breaking stuff, you are not moving fast enough.

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.

When you give everyone a voice and give people power, the system usually ends up in a really good place. So, what we view our role as, is giving people that power.

A squirrel dying in front of your house may be more relevant to your interests right now than people dying in Africa.

The companies that work are the ones that people really care about and have a vision for the world so do something you like.

I do everything on my phone as a lot of people do.

We are a mission-driven company. In order to do this, we have to build a great team. And in order to do that, you need people to know they can make a bunch of money. So we need a business model to make a lot of money.

I don't have an alarm clock. If someone needs to wake me up, then I have my BlackBerry next to me.

Hackathons are these things where just all of the Facebook engineers get together and stay up all night building things. And, I mean, usually at these hackathons, I code too, just alongside everyone.

There are good examples of companies - Coca-Cola is one - that invested before there was a huge market in countries, and I think that ended up playing out to their benefit for decades to come.

Facebook is in a very different place than Apple, Google, Amazon, Samsung, and Microsoft. We are trying to build a community.

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.

I think a simple rule of business is, if you do the things that are easier first, then you can actually make a lot of progress.

I look at Google and think they have a strong academic culture. Elegant solutions to complex problems.

Our philosophy is that we care about people first.

Building a mission and building a business go hand in hand. The primary thing that excites me is the mission. But we have always had a healthy understanding that we need to do both.

If you're always under the pressure of real identity, I think that is somewhat of a burden.

Once you have a product that you are happy with, you the need to centralize things to continue growth.

I remember flying in, driving down 101 in a cab, and passing by all these tech companies like Yahoo! I remember thinking, 'Maybe someday we'll build a company. This probably isn't it, but one day we will.'