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.

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

We're the only species that have crapped up the planet and the only species that can clean it up.

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.

When we realize we can make a buck cleaning up the environment, it will be done!

If you don't generate tension in the film to begin with... you can't really make a purse out of a sow's ear, you know.

The people of the future will say, 'meat-eaters!' in disgust and regard us in the same way that we regard cannibals and cannibalism.