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

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

Much of the debate over global warming is predicated on fear, rather than science.

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

When we try to pick out anything by itself, we find it hitched to everything else in the universe.

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

The only way forward, if we are going to improve the quality of the environment, is to get everybody involved.

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

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

People blame their environment. There is only one person to blame - and only one - themselves.