Here the contention is not just that the new Darwinian paradigm can help us realize whichever moral values we happen to choose. The claim is that the new paradigm can actually influence — legitimately — our choice of basic values in the first place. Some Darwinians insist that such influence can never be legitimate. What they have in mind is the naturalistic fallacy, whose past violation has so tainted their line of work. But what we're doing here doesn't violate the naturalistic fallacy. Quite the opposite. By studying nature — by seeing the origins of the retributive impulse — we see how we have been conned into committing the naturalistic fallacy without knowing it; we discover that the aura of divine truth surrounding retribution is nothing more than a tool with which nature — natural selection — gets us to uncritically accept its "values." Once this revelation hits norm, we are less likely to obey this aura, and thus less likely to commit the fallacy.
Robert Wright, The Moral Animal: Why We Are the Way We Are: The New Science of Evolutionary Psychology
darwinism, evolution, morality