"We must now examine whether just people also live better and are happier than unjust ones. I think it's clear already that this is so, but we must look into it further, since the argument concerns no ordinary topic, but the way we ought to live."

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It is so hard for an evolutionary biologist to write about extinction caused by human stupidity. Let me then float an unconventional plea, the inverse of the usual argument. The extinction of Partula is unfair to Partula. That is the conventional argument, and I do not challenge its primacy. But we need a humanistic ecology as well, both for the practical reason that people will always touch people more than snails do or can, and for the moral reason that humans are legitimately the measure of all ethical questions for these are our issues, not nature's.

— Stephen Jay Gould