Abstract

We highlight the deep ecology movement, inspired on ecological knowledge but mainly on the life-style of the ecological and biological field-worker. Its creator, the Norwegian philosopher Arne Naess, stresses that human and no human beings have, at least, one kind of right in common: namely the ‘right’ to express its own nature, to live and blossom. This idea shows the inspiration from perseverare in suo esse, from Baruch Spinoza’s Ethics. But beyond this Spinozan influence, the striving for expression of one’s own nature is interpreted from the perspective of present evolutionism and endosymbiosis. Even though, scientific knowledge, if necessary, is considered limited. Thus, this movement should be regarded as ecophilosophical rather than ecological, as a kind of sophia orwisdom. In turn, many supporters of conservation biology (following Michael Soulé) associate their science with ecosophy, not encouraging the dichotomy fact/value. Conservation biology axioms such as: evolution in valuable, organism’s diversity is good, premature extinction of species populations is negative, etc., have been inspired on the deep ecology movement. The consideration of the terms biodiversity, evolution or biosphere as thick ethical concepts (following Hillary Putnam), shows this integration of the descriptive and the normative.