Sometimes the most important things that we do are things we cannot measure.

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

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.

When I first went to Africa, I thought that I was personally going to save the continent, if not the world.

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.

To be part of building a movement, you have to keep moving.

Failure can be an incredibly motivating force.