Any social or cultural change has to be made openly and with people agreeing. You don't get there by just pushing an outsider's point of view.

If we're going to make progress on this issue [of contraception], we have to be really clear about what our agenda is. We're not talking about abortion. We're not talking about population control. What I'm talking about is giving women the power to save their lives, to save their children's lives and to give their families the best possible future.

Make sure you continue to trust what you know now about yourself and stay true to what you believe in

One life is worth no more or less than any other

Now we just really need to do the work, which we're doing, to get contraceptives out to women worldwide.

Contraceptives unlock one of the most dormant, but potentially powerful assets in development: women as decision-makers. When women have the power to make choices about their families, they tend to decide precisely what demographers, economists, and development experts recommend. They invest in the long-term human capital of their families.

The biggest pieces of work that we do are vaccines, because those save lives, and also family planning. Because if a woman can space the births of her children, it changes everything for her health and her child's health.