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.

We need leaders, we ourselves need to lead from a place that has the audacity to believe that we ourselves can extend the fundamental assumption that all men are created equal to every, man woman and child on this planet. And we need the humility to recognize that we cannot do it alone.

I've learned that there is no currency like trust and no catalyst like hope. There is nothing worse for building relationships than pandering, on one hand, and preaching, on the other. And the most important quality we must all strengthen in ourselves is that of a deep human empathy, for that will provide the most hope of all and the foundation for our collective survival.

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

When systems are broken, it's an opportunity for invention and innovation.

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

I think I still have a great sense of adventure and trust, and am surprisingly idealistic given all the horrible things I've seen since I was 25. I think how I have changed is that I have a much deeper understanding of the dark forces in the world, of power.