6Rene Descartes. Animal is Machine. in Susan J Armstrong, Susan Armstrong, ed. Environmental Ethics.. Divergence and Convergence[M]. McGraw-Hill, 1993 : 281 - 285.
7Immanuel Kant. Rational Beings Alone Have Moral Worth, in Louis P. Fojman. Environmental Ethics tReadings in The- ory and Application[M]. Wadsworth, 2000 : 31 - 32.
8Grundmann Reiner. Marxism and Ecology[M]. New York, Oxford University Press, 1991 : 11.
9David Pepper. Ecosocialismt From Deep Ecology to Social Justice[M]. London and New York:Routledge,1993:8.
10Charlene Spretnak. The Resurgence of the Real: Body, Naa ture, and Place in a Hypermodern World[M]. Addison Wes-ley Publishing Company, 1997: 4.