I feel like I'm a relentless, pragmatic, determined optimist.

We can send people to the Moon; we can see if there's life on Mars - why can't we get $5 [mosquito] nets to 500 million people?

I've heard it said that the most dangerous animal on the planet is the adolescent male.

How you see where you are always depends on where you've been.

You should focus on being more interested than interesting.

Poverty is too complex to be answered with a one-size-fits-all approach, and if there is any place that illustrates that complexity, as well as a better way forward, it is Rwanda.

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.