I work hard because I love my work.

We win because we hire the smartest people. We improve our products based on feedback, until they're the best. We have retreats each year where we think about where the world is heading.

The malaria parasite has been killing children and sapping the strength of whole populations for tens of thousands of years. It is impossible to calculate the harm malaria has done to the world.

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.

Five years from now on the Web for free you’ll be able to find the best lectures in the world. It will be better than any single university.

The main thing that's missing in energy is an incentive to create things that are zero-CO2-emitting and that have the right scale and reliability characteristics.

The job was to put into a, a computer with only 4K of memory an entire basic full blown, floating point Basic and that's one of the greatest programming feats I've ever had a chance to work on.