We won't have a society if we destroy the environment.

No one should be able to enter a wilderness by mechanical means.

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

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

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

If we do not permit the earth to produce beauty and joy, it will in the end not produce food, either.

We learned that economic growth and environmental protection can and should go hand in hand.

The environment is everything that isn't me.

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

We won't have a society if we destroy the environment.