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.

We're focused on doing one thing incredibly well. If you look at other companies, all of these companies are doing a lot of different things but we're still, as we grow, doing exactly one thing.

If you're offered a seat on a rocket ship, don't ask what seat! Just get on.

But I really believe that when you give people authentic identity, which is what Facebook does, and you can be your real self and connect with real people online, things will change.

In fact, my New Year's resolution every year, and I'm Jewish so I get two New Years a year, is to meditate, and I fail every time.

Men can comfortably claim credit for what they do as long as they don't veer into arrogance. For women, taking credit comes at a real social and professional cost.

Women attribute their success to working hard, luck, and help from other people. Men will attribute that - whatever success they have, that same success - to their own core skills.