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.

People have to understand that unless social enterprise is experimental, it will not succeed in making a difference.

What is the cost of not daring? What is the cost of not trying?

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.

Things are always harder than you think they're going to be.

Our actions - and inaction - touch people every day, people we may never know and never meet.

So many low income people have seen so many failed promises broken and seen so many quacks and sporadic medicines offered to them that building trust takes a lot of time, takes a lot of patience.