Sometimes the most important things that we do are things we cannot measure.

The older I get, the more determined I feel to do whatever I can to help release that human potential somehow. Not in a fluffy way nor in a hardcore way. But in that middle ground, that marriage of love and power. I'm not afraid of either.

I was encouraged to break all the rules but to take the best of philanthropy, the best of investing, and the best of development finance, and experiment with new ways to create this venture capital model of using philanthropy to back patient capital investments, and then build solutions that were measured in terms of the kind of impact and change they were making on people's lives and in the world, not just on the financial return.

Africa can stun you in an instant. It can throw floods and drought and disease at you, sometimes all at the same time. In the next moment, it will tease you with its magnificent beauty, so even if you don't forget, you can find a way to forgive. Ultimately, it keeps you coming back for more.

Human beings tend not to spend money on health preventionally. We tend to spend it on top treatment.

When people gain income, they gain choice, and that is fundamental to dignity.

In today's world, the elites are growing even more comfortable with one another across national lines, yet at the same time, less comfortable with low-income people who share their nationality. How we create those bonds of community that are truly global as well as national is one of our generation's great challenges.