There is no more honorable thing any of us can do with our lives than to work to put part of the world off-limits to the activities of human beings.

Free shackled rivers!...The finest fantasy of eco-warriors in the West is the destruction of [Glen Canyon] Dam and the liberation of the Colorado [River].

We advocate biodiversity for biodiversity's sake. It may take our extinction to set things straight.

... do something. Pay your rent for the privilege of living on this beautiful, blue-green, living Earth.

The AIDS epidemic, rather than being a scourge, is a welcome development in the inevitable reduction of human population... If it didn't exist, radical environmentalists would have to invent it.

Never Get Into An Argument With A Customer. If You Win The Argument You Will Almost Invariably Lose The Sale. And I Don't Like Your Chances For A Sale If You Lose The Argument Either.

Our environmental problems originate in the hubris of imagining ourselves as the central nervous system or the brain of nature. We're not the brain, we are a cancer on nature.