The Green Revolution focused on the big three - maize, rice and wheat - and the Green Revolution did not adapt the big three to African conditions, other than South Africa, as much as they should have.

Microsoft was founded with a vision of a computer on every desk, and in every home. We've never wavered from that vision.

Often you have to rely on intuition.

I have been struck again and again by how important measurement is to improving the human condition.

I believe that if you show people the problems and you show them the solutions they will be moved to act.

Ninety percent of the cases of polio are in security-vulnerable areas.

The challenge here is to design a system where market incentives, including profits and recognition, drive those principles to do more for the poor. I like to call this idea creative capitalism, an approach where governments, businesses, and nonprofits work together to stretch the reach of market forces so that more people can make a profit, or gain recognition, doing work that eases the world's inequities.