You can have the best vaccines for a woman or her child, but if you can't get her to come and get them then they won't work.

When we invest in women and girls, we are investing in the people who invest in everyone else.

Like in Africa, if somebody doesn't have fuel, they're still going and collecting firewood. If they get an oven, that's a huge difference. You can do things to reduce the inequities by making sure that they can get clean energy, safe energy. To make sure they're not having to collect water every day. That's huge for women in the developing world.

In different places you run into myths around vaccination or around family planning. In the United States, one of the myths that existed for a long time, that has been completely debunked, was that autism was linked to a vaccine.

That's universal - we all want to bring every good thing to our children. But what's not universal is our ability to provide every good thing.

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.

If you invest in a girl or a woman, you are investing in everybody else.