Humankind has not woven the web of life. We are but one thread within it. Whatever we do to the web, we do to ourselves. All things are bound together. All things connect. – Chief Seattle, 1855

Zoos are becoming facsimiles – or perhaps caricatures – of how animals once were in their natural habitat. If the right policies toward nature were pursued, we would need no zoos at all. – Michael Fox, Sierra, November-December 1990

We shall continue to have a worsening ecologic crisis until we reject the Christian axiom that nature has no reason for existence save to serve man. – Lynn White, Jr., "The Historical Roots of Our Ecologic Crisis," 1967