If you want to build a great company, get the hell out of Silicon Valley.

I'm not an educator ... I'm a learner.

The most important work I got a chance to be involved in, no matter what I do, is the personal computer... I even knew not to get married until later because I was so obsessed with it. That's my life's work.

I like to read general biology - things about the immune system and advances in that area - because it lays the foundation for my part of the dialogue at the foundation about what things we ought to pursue.

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?'

... No one is less happy than I am with the performance of Microsoft stock! I've lost tens of billions of dollars this year - if you check, you'll see that's more than most people make in a lifetime!

Even in some of our vaccine areas, like an AIDS vaccine, things have taken longer than we expected, but we have the pipeline of tools. The biological information that we have that gives us insights is fantastic.