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.

And anyway, who wears a tiara on a jungle gym?

You know, there has never been a 24-hour period in five years when I have not responded to e-mail at Facebook. I am not saying it's easy. I work long hours.

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.

Aggressive and hard-charging women violate unwritten rules about acceptable social conduct. Men are continually applauded for being ambitious and powerful and successful, but women who display these same traits often pay a social penalty. Female accomplishments come at a cost.

Success for me is that if my son chooses to be a stay-at-home parent, he is cheered on for that decision. And if my daughter chooses to work outside the home and is successful, she is cheered on and supported.

In the future, there will be no female leaders. There will just be leaders.