I did not become a vegetarian for my health, I did it for the health of the chickens.

I have a private plane. But I fly commercial when I go to environmental conferences.

I think the cost of energy will come down when we make this transition to renewable energy.

We don't have to sacrifice a strong economy for a healthy environment.

Never doubt that a small group of thoughtful, committed citizens can change the world indeed, it's the only thing that ever has.

Our world faces a true planetary emergency. I know the phrase sounds shrill, and I know it's a challenge to the moral imagination.

You may be able to fool the voters, but not the atmosphere.

Take a course in good water and air and in the eternal youth of Nature you may renew your own. Go quietly, alone no harm will befall you.

I can find God in nature, in animals, in birds and the environment.

Unless we keep this planet healthy, everything else is for naught.