Social gains are never handed out. They must be seized.

It is the ultimate luxury to combine passion and contribution. It's also a very clear path to happiness.

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.

Careers are a jungle gym, not a ladder.

I know from my own experience that the path to change is best traveled when we travel together.

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.

Let's have an honest conversation about what's going on. A man and a man at a bar looks like mentoring. A man and a woman at a bar looks like dating.