By reflecting on Deep Ecology, several lessons can be culled for environmental philosophy in general. The Deep Ecology of Arne Naess, Bill Devall, and George Sessions is appropriately characterized as a theory founded on the principles of biocentric egalitarianism and metaphysical holism. After considering each of these principles in turn, and then in relation to each other, the lesson turns out to be that the ontological foundation for environmental ethics must be nonegalitarian and polycentric.
