Is There a Moral Requirement?

The rules of morality are not an illusion, he says. They emerge from a hypothetical session in which we ask ourselves: How shall we behave towards one another? We face this question hypothetically in the mode of perfect rationality; what would perfectly rational beings lay down as these rules? But these are rules that we give to one another,. And consequently, if somebody breaks those rules, they're not upholding their part of the social contract. The rest of us who are indeed limiting our behavior in keeping with this agreement can appropriately and with due authority turn to the person who's acting immorally.