I have a five year-old son and a three year-old daughter. I want my son to have a choice to contribute fully in the workforce or at home. And I want my daughter to have the choice to not just succeed, but to be liked for her accomplishments.

We call our little girls bossy. Go to a playground; little girls get called bossy all the time - a word that's almost never used for boys - and that leads directly to the problems women face in the workforce.

Women are not making it to the top. A hundred and ninety heads of state; nine are women. Of all the people in parliament in the world, thirteen per cent are women. In the corporate sector, women at the top - C-level jobs, board seats - tops out at fifteen, sixteen per cent.

The social web can't exist until you are your real self online. I have to be me. You have to be you. Once we are online as ourselves, connected to each other and our other friends, then you can have the evolution of what becomes the social web.

I'd worked on leprosy and malaria in India [at the World Bank] and asked myself the question: Why do we let 2 million children die every year around the world for not having clean water? Because they're faceless and nameless. So, for me, Facebook looked like it was going to solve the problem of the invisible victim.

Everyone knows that marriage is the biggest personal decision you make, but it's the biggest career decision you can make.

We [Facebook] really believe in enabling people to be their authentic selves on the web, and enabling people to communicate directly with each other in a very personal way.