As we have taken diarrhea and pneumonia down, even malaria down quite a bit, the portion of the days that are very early in that 5 years - the first month, the first day - it's about half now. Yet that's the part we understand the least.

I do normal kind of contributions, particularly for people who are going over to Africa and help highlighting global health, and that's tended to be pretty bipartisan in nature because of the coalition there exists fortunately around these global health issues. But I don't think my backing, putting a lot of money into political contributions is a way I'm going to try and help improve the world.

The death of a child is an incredible tragedy all over the world. Back in 1990, about 12 percent of children were dying before they reached the age of 5.

You’ve got to give great tools to small teams. Pick good people, use small teams and give them great tools so that they are very productive in terms of what they are doing.

No one will need more than 637Kb of memory for a personal computer

Philanthropy should be taking much bigger risks that business. If these are easy problems, business and government can come in and solve them.

DOS is ugly and interferes with users' experience.