If you actually do something you love it's a lot easier and takes on a lot more purpose.

At Facebook, we build tools to help people connect with the people they want and share what they want, and by doing this we are extending people's capacity to build and maintain relationships.

Simply put: we don't build services to make money; we make money to build better services.

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.

You can be so bad at so many things... and as long as you stay focused on how you're providing value to your users and customers, and you have something that is unique and valuable... you get through all that stuff.

Of course the Silicon Valley is unique and Berlin is not yet comparable. But of all the different cities that are building a startup infrastructure, Berlin is the one with the most similar energy.

I think I've grown and learned a lot.