I'm happy we have three healthy children and we'll stay with three healthy children.

Childbearing, I mean, if there's no place to go to deliver your baby, then you're the one that's delivering in those unhealthy circumstances. Or if you can't get access to family planning, your chances of surviving and being able to bring your kids up if they come one right after the other, that locks you into a cycle of poverty.

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.

If you ask, who has the chance to move into the city and get a good job out in the developing world? It's a man. Who's left to care for the kids back at home? The woman is.

You are indebted to life until you help some less fortunate person, just as you were helped.

With economic opportunity, sometimes it's making sure that if they're not in a place where they can have good jobs, that when they have economic opportunity, they have digital tools to use.

In the United States, there's definitely some controversy about birth control in general, and I think we needed to split the debate and have people realize that we actually agree as a country about contraceptives. Over 93 percent of American women say they use contraceptives, and they feel very good about it.