People have really gotten comfortable not only sharing more information and different kinds, but more openly and with more people - and that social norm is just something that has evolved over time.

Berlin is one of my favorite cities in the world. I feel like the energy is very youthful. It has such an important history, including its recent history of unification.

There are social restrictions where someone could be suppressing someone else's freedom to express themselves.

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 only took me two weeks to build the first version of Facebook because I had so much stuff before then.

It's tough to say, exactly, what things will look like in three to five years, but there's a lot of work to do in just moving along the path that we've already set out.

I don't want to be in a situation where I have to leave some other commitment or worse I am rude and someone else has to support my stuff. I stopped coding for Facebook a while ago.