The only way to end poverty, to make it history, is to build viable systems on the ground that deliver critical and affordable goods and services to the poor, in ways that are financially sustainable and scaleable. If we do that, we really can make poverty history.

Just start Don't wait for perfection. Just start and let the work teach you.

When we were walking through the narrow alleys [of the Mathare Valley slums], it was literally impossible not to step in the raw sewage and the garbage alongside the little homes. But at the same time it was also impossible not to see the human vitality, the aspiration and the ambition of the people who live there.

Listening is not only about waiting, but it's also learning how better to ask questions.

It's about all of us, and the kind of world that we, together, want to live in and share.

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

The only way we really create change is to enter any situation with the humility to listen and to recognize the world as it is, and then the audacity to dream what it could be, to have the patience to start and let the work teach you, to be willing to lead when you need to lead, and to listen. To have a sense of generosity and empathy, but not over-empathy, because accountability is so critical to building solutions that work.