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

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

By polluting clear water with slime you will never find good drinking water.

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

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

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

It seems that every time mankind is given a lot of energy, we go out and wreck something with it.

Harmony with land is like harmony with a friend you cannot cherish his right hand and chop off his left.

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

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