I can understand wanting to have a million dollars but once you get beyond that, I have to tell you, it's the same hamburger.

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.

Don't let complexity stop you. Be activists. Take on the big inequities. It will be one of the great experiences of your lives.

The human body is the most complex system ever created. The more we learn about it, the more appreciation we have about what a rich system it is.

This antitrust thing will blow over.

The UK is a very international country.

Software is inherently complicated. If you say to somebody I want an airline reservation system, to really say what you want in terms of overbooking and fares, and different airlines communicating with each or schedule changes, it's immensely complex. And so you can't write a program that's any simpler than that full specification.