Are bacteriophage T4 and the long-nosed elephant fish valuable in their own right? Nicholas Agar defends an affirmative answer to this question by arguing that anything living is intrinsically valuable. This claim challenges received ethical wisdom according to which only human beings are valuable in themselves. The resulting biocentric or life-centered morality forms the platform for an ethic of the environment. Agar builds a bridge between the biological sciences and what he calls "folk" morality to arrive at a workable environmental ethic and a new spectrum–a new hierarchy–of living organisms.
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