I don't have a magic formula for prioritizing the world's problems.

Is the rich world aware of how four billion of the six billion live? If we were aware, we would want to help out, we'd want to get involved.

This [collaboration] is a case where I think that even what's available now is vastly underutilized around the world,

We're changing the world with technology.

In low-income countries, the main problems you have is infectious diseases.

There's no magic line between an application and an operating system that some bureaucrat in Washington should draw.