Be nice to nerds, they'll probably be your boss one day.

I'm never fully satisfied with any Microsoft product.

Capitalism has worked very well. Anyone who wants to move to North Korea is welcome.

When I was trying to figure out why lives have improved so much in the last 300 years, where we've gone from a third of kids dying before 5 to - by 1990 it was down to 10% - now it's down to 5%. And saying why, over all history, there were smart people, but that number didn't change. Average life span didn't change. What's magical about what's been deemed the Industrial Revolution? It's really energy intensity.

I admire leaders in science, people who really figure things out like Richard Fineman or people who work on vaccines, tons of people working on [the] HIV vaccine. There's leaders in business, people like Warren Buffett, who've got a certain approach they take that are pretty amazing. There [are] product innovators like Steve Jobs was, where he gets behind a concept and does a fantastic job.

I don't think there's anything unique about human intelligence.

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.