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.

The best change that comes to the world is when all parties are seeing each other as equal, and all parties have the opportunity to be transformed. That really goes back to the idea of dignity.

We don't see profit as a blind instrument.

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

What would the world look like if we asked ourselves the following more often; are our actions helping others find a way to feel more freer, more dignified and more beautiful?

As a young woman, I dreamed of changing the world. In my twenties, I went to Africa to try and save the continent, only to learn that Africans neither wanted nor needed saving. Indeed, when I was there, I saw some of the worst that good intentions, traditional charity, and aid can produce.

Our lives are so short. And our time on this planet is so precious. All we have is each other.