Both men and women react negatively when women negotiate on their own behalf. A man can just negotiate: "I have a better offer. That's not enough to make my family's ends meet." No one feels bad about it. But when a woman does that, there's a backlash.

When you're more valuable, the people around you will do more to make it work.

My goal is very clear, and I wrote about it in Lean In, which is that women run half our companies and countries and men run half our homes. As much as I wish that could happen in four years, I don't think that's a likely time period. But I think it can happen sooner than we think. Part of it is having that aspiration and that goal. I think we too often suffer from the tyranny of low expectations.

No one gets to the top, if they sit on the sidelines, or if they don't believe in themselves.

The most important thing is to have a more open and honest dialogue about gender issues.

I am saying that I was able to mold those hours around the needs of my family, and that matters. And I really encourage other people at Facebook to mold hours around themselves.

Two things that I think matter are gratitude and joy.