“Some of the opponents of Darwinian moral naturalism insist that morality requires a transcendent source in religious belief. But in this debate over slavery, we see that such religious belief–at least as coming from Biblical revelation–does not provide us reliable moral guidance. Cobb was able to show that the Bible–both the Old Testament and the New Testament–sanctioned slavery. (Recent books by Mark Noll and Eugene Genovese have surveyed the history of Southern proslavery arguments based on the Bible.) If the Bible cannot resolve such a moral debate, then we have to appeal to our natural moral experience that does not depend on religious belief. Darwinian science indicates how such moral experience might be founded in our evolved human nature.”

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