...In a world riven by inequity, medicine could be viewed as social justice work.

I think we will see better vaccines within the next 15 years, but I'm not a scientist and am focused on the short-term - what will happen in the interim.

I feel it's part of my job to make the problems of the poor compelling.

The model of the teaching hospital, which links research to teaching and service is what's missing in global health.

We have to design a health delivery system by actually talking to people and asking, 'What would make this service better for you?' As soon as you start asking, you get a flood of answers.

You can't have public health without a public health system. We just don't want to be part of a mindless competition for resources. We want to build back capacity in the system.

The biggest public health challenge is rebuilding health systems. In other words, if you look at cholera or maternal mortality or tuberculosis in Haiti, they're major problems in Haiti, but the biggest problem is rebuilding systems.