When I was a kid, we never heard of smog, ozone depletion, acid rain, green house gasses.

Years ago on the set of Gunsmoke I read the book The Holy Science. Since then I have not eaten meat.

Business must be the solution, not the problem.

We should be able to support our own economy within our own borders.

I feel responsible; I feel I've got to do something that will leave the kids a place where they can live healthy, safe, productive, creative and prosperous lives.

The earth is a tremendous gift. There is nothing else like it in the known universe. I want to leave it the way I found it.

It's not an if - we're going to have to change. Oil is simply going to be gone.