Software is the magic thing whose importance only goes up over time.

Microsoft's only factory asset is the human imagination.

Talking to mothers, always brings it home because they're so anxious to do everything they can for their kids and so tragic for them.

With nuclear weapons, you'd think you would probably stop after killing 100million. Smallpox won't stop. Because the population is naïve, and there are no real preparations. That, if it got out and spread, would be a larger number.

If you're taking care of your family and society and are comfortable you can start to think about helping those most in need globally. That's how we became engaged in those things.

The huge turnout for Live 8 here and around the world proves that thanks to the leadership from people like Tony Blair and Gordon Brown the world is beginning to demand more action on global health and poverty.

It is my belief that industry and government around the world should work even more closely to protect the privacy and security of Internet users, and promote the exchange of ideas, while respecting legitimate government considerations.