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.

Every woman I know, particularly the senior ones, has been called too aggressive at work. We know in gender blind studies that men are more aggressive in their offices than women. We know that. Yet we're busy telling all the women that they're too aggressive. That's the issue.

And what I saw happening is that women don't make one decision to leave the workforce. They makes lots of little decisions really far in advance that kind of inevitably lead them there.

What I tell everyone, and I really do for myself is, I have a long-run dream, which is I want to work on stuff that I think matters.

I just believed. I believed that the technology would change people's lives. I believed putting real identity online - putting technology behind real identity - was the missing link.

I probably shouldn't admit this since I work in the tech industry, but I still prefer reading paper books.

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.