Bicycling is a big part of the future. It has to be. There's something wrong with a society that drives a car to work out in a gym.

I understand that you take the Bible, as written in English, translated many many times over the last three millennia as to be a more accurate, more reasonable assessment of the natural laws we see around us than what I and everybody in here can observe. That, to me, is unsettling.

Climate change is a real deal. So, hey deniers - cut it out, and let's get to work.

People that don't want to get down to the business at hand. Instead of just doing less, we have to find ways of doing more with less. That's the key to the future.

I am so old, I entered engineering school with a slide rule. And I left engineering school with a calculator. I can still use a slide rule but it's not a skill you especially need anymore.

My father was a very good Boy Scout. He was very skilled with knots, and he showed me how to tie a bow tie.

To leave the world better than you found it, sometimes you have to pick up other people's trash.