How we deal with the AIDS epidemic should be one of the greatest ways that the world gets measured. The report card for this era.

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.

Americans want students to get the best education possible. We want schools to prepare children to become good citizens and members of a prosperous American economy.

The answer is simple, and harsh. The market did not reward saving the lives of these children, and governments did not subsidize it. So the children died because their mothers and their fathers had no power in the market and no voice in the system.

If I think something's a waste of time or inappropriate I don't wait to point it out. I say it right away. It's real time. So you might hear me say 'That's the dumbest idea I have ever heard' many times during a meeting.

The key for us, number one, has always been hiring very smart people.

Humanity’s greatest advances are not in its discoveries – but in how those discoveries are applied to reduce inequity.