Billionaires should never be responsible for solving problems, because they're not the government.

In the U.S., we believe the best way to improve lives is to improve public education.

Bridge is one of the last games in which the computer is not better.

I really do think cancer will largely be a solved problem. I think most of the infectious diseases like malaria - our foundation is very involved - once we're finishing polio eradication, then starting up this malaria eradication, and getting that done as fast as we can.

Thinking about impact on children meant adding to the agenda, both the R&D agenda and the delivery agenda, but it's amazing news, even in the scale of other tragedies.

The world is progressing and resources are becoming more abundant. I'd rather go into a grocery store today than a king's banquet a hundred years ago.

While we're all very dependent on technology, it doesn't always work.