The more we exploit nature, the more our options are reduced, until we have only one: to fight for survival.

—Morris K. Udall

Trying to save ecosystems has more to do with egosystems.

—Don Rittner

To people who think of themselves as God’s houseguests, American enterprise must seem arrogant beyond belief. Or stupid. A nation of amnesiacs, proceeding as if there were no other day but today. Assuming the land could also forget what had been done to it.

 —Barbara Kingsolver

Environments are not just containers, but are processes that change the content totally.

—Marshall McLuhan

Nature provides a free lunch, but only if we control our appetites.

 —William Ruckelshaus

There is a sufficiency in the world for man’s need but not for man’s greed.

 —Mohandas Gandhi

Because we don’t think about future generations, they will never forget us.

 —Henrik Tikkanen

Opie, you haven’t finished your milk.  We can’t put it back in the cow, you know.

 —Aunt Bee Taylor

The problem is no longer that with every pair of hands that comes into the world there comes a hungry stomach.  Rather it is that, attached to those hands are sharp elbows.

–Paul A. Samuelson

For a successful technology, reality must take precedence over public relations, for Nature cannot be fooled.

  —Richard P. Feynman

Your grandchildren will likely find it incredible - or even sinful - that you burned up a gallon of gasoline to fetch a pack of cigarettes!

–Dr. Paul MacCready, Jr

Western society has accepted as unquestionable a technological imperative that is quite as arbitrary as the most primitive taboo:  not merely the duty to foster invention and constantly to create technological novelties, but equally the duty to surrender to these novelties unconditionally, just because they are offered, without respect to their human consequences.

 —Lewis Mumford

To live a pure unselfish life, one must count nothing as one’s own in the midst of abundance.

  —Buddha

The control man has secured over nature has far outrun his control over himself.

 —Ernest Jones

History teaches us that men and nations behave wisely once they have exhausted all other alternatives.

 —Abba Eban