The ideal thing would be to have a 100 percent effective AIDS vaccine. And to have broad usage of that vaccine. That would literally break the epidemic.

Learning to write programs stretches your mind, and helps you think better, creates a way of thinking about things that I think is helpful in all domains.

In programming when you're making a change you have to know all the affected places, and you have to be able to model in your head what the performance impact will be.

I feel pretty stupid that I don't know any foreign languages. I wish I knew French or Arabic or Chinese.

People who say they don't see the acceleration of innovation is a wilful blindness. We are innovation at a wonderful speed for the basic things we think everyone should get.

For one thing, there's an essential human factor in every business endeavor. It doesn't matter if you have a perfect product, production plan and marketing pitch; you'll still need the right people to lead and implement those plans.

I'm quite worried about the fiscal imbalances that we've got and what that might mean in terms of financial crisis ahead.