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

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

Local innovation and initiative can help us better understand how to protect our environment.

Not all is doom and gloom. We are beginning to understand the natural world and are gaining a reverence for life - all life.

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

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

The environment is everything that isn't me.

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

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

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