I felt suicidal. I couldn't stop crying. I remember thinking, wouldn't it be great if the car crashed and I died?

We have to look at it country by country. In places like the developing world where, as you say, in Mumbai, it's about five hours' gap between what a woman does and a man does. You have to start by recognizing the problem and talking about it, trying to change those roles.

Bill [Gates] and I believe philanthropy can only be effective if it starts things and proves whether they actually work or not. That's the place that governments often don't want to, or can't, work.

Everyone agrees that the failure of our high schools is tragic. It's bad business, and it's bad policy. But we act as if it can't be helped. It can be helped. We designed these high schools; we can redesign them.

I think it's very important that we instill in our kids that it has nothing to do with their name or their situation that they're growing up in; it has to do with who they are as an individual.

Women around the world should have a tool that helps them plan their pregnancies.

Abortion has become a very politicised issue that I think countries have to work out themselves. In a lot of countries, people can't even yet agree on what their laws should be.