In 2003, I almost died of an intestinal blockage when I was on a mountain in Chile, filming a segment for 'Scientific American Frontiers.'

I'm an angry person, angrier than most people would imagine, I get flashes of anger. What works for me is working out when it's useful to use that anger.

If you know what you're looking for, that's all you'll get - what's previously known. But when you're open to what's possible, you get something new - that's creativity.

Real listening is a willingness to let the other person change you.

Never Have Your Dog Stuffed is really advice to myself, a reminder to myself not to avoid change or uncertainty, but to go with it, to surf into change.

When does she do all this thinking? We're together all the time but she thinks deeply about things and with feeling and she can remember the facts. We've been married 48 years.

Life is great-I wouldn't know what I'd do without it.