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'm cooler than you. WAAAY cooler.

Two out of every five people on Earth today owe their lives to the higher crop outputs that fertilizer has made possible.

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.

How we deal with the AIDS epidemic should be one of the greatest ways that the world gets measured. The report card for this era.

3D is a way of organizing things, particularly as we're getting much more media information on the computer, a lot more choices, a lot more navigation than we've ever had before.

I think it makes sense to believe in God, but exactly what decision in your life you make differently because of it, I don't know.