Humanity is the cancer of nature.

The optimum human population of earth is zero.

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].

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.

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

I founded Friends of the Earth to make the Sierra Club look reasonable. Then I founded the Earth Island Institute to make Friends of the Earth seem reasonable.

My three main goals would be to reduce human population to about 100 million worldwide, destroy the industrial infrastructure and see wilderness, with it's full complement of species, returning throughout the world.