I think any statement about stock prices is always suspect unless it's made by Warren Buffett.

The Gates Foundation has learned that two questions can predict how much kids learn: 'Does your teacher use class time well?' and, 'When you're confused, does your teacher help you get straightened out?'

It is hard to overstate how valuable it is to have all the incredible tools that are used for human disease to study plants.

One of the wonderful things about the information highway is that virtual equity is far easier to achieve than real-world equity...We are all created equal in the virtual world and we can use this equality to help address some of the sociological problems that society has yet to solve in the physical world.

When I was growing up, my parents were almost involved in various volunteer things. My dad was head of Planned Parenthood. And it was very controversial to be involved with that.

It's OK for China to invent cancer drugs that cure patients in the United States. We want them to catch up. But as the leader, we want to keep setting a very, very high standard. We don't want them to catch up because we're slowing down or, even worse, going into reverse.

I set a rule that people weren't allowed to send good news unless they sent around an equal amount of bad news. We had to get a balanced picture. In fact, I kind of favored just hearing about the accounts we were losing because ... bad news is generally more actionable than good news.