 Scanlon’s suggestion regarding the subject matter of morality can easily be seen as an instance of the general schema given above. His “system of rules” is a specific kind of informal public system; he understands endorsement by all rational people as non-rejection by all reasonable people; and he offers a specific account of the conditions under which moral agents would reach the relevant agreement. But Scanlon also places very heavy emphasis on the fact that if he is right about the subject matter of morality, then what compliance with moral norms allows us to do is to justify our behavior to others in ways that they cannot reasonably reject. Indeed, the ability to justify ourselves to reasonable people is a primary source of moral motivation for Scanlon (see also Sprigge 1964: 319). This might seem to suggest a somewhat different definitional claim about morality: that morality consists in the most basic norms in terms of which we justify ourselves to others. But it is plausible that this purportedly definitional claim is better thought of as a corollary of Scanlon’s particular version of the general schema, with endorsement understood as non-rejection. For, if morality is the system of norms that would be endorsed in this way, we can justify our actions to others by pointing out that even they, were they reasonable, would have endorsed rules that allowed our behavior.