Paul Farmer is one of the most impressive people I’ve had the honor of getting to know. He’s an amazing advocate for the health of the world’s poorest people, and he co-founded a system of health clinics in Haiti that reaches more than a million people in some of that country’s hardest-to-reach places. Melinda and I took our kids to Haiti this year so they could meet Paul and see the work he leads. In this book he really opens your eyes to the vast differences between the health of the rich and the health of the poor.