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.

I think we so often equate leadership with being experts - the leader is supposed to come in and fix things. But in this interconnected world we live in now, it's almost impossible for just one person to do that.

May each of you live lives of immersion. They won't necessarily be easy lives. But in the end, it is all that will sustain us.

Girls and women are most victimised in societies where boys and men are disempowered.

Your job is not to be perfect, your job is only to be human.

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.