 Smith does better with the skeptical challenge. To the person who asks, “why be moral?,” Smith essentially provides what Christine Korsgaard calls a “reflective endorsement” argument (Korsgaard 1996: 19, 49–89). Reflective endorsement theorists—Korsgaard gives Hume and Butler as examples—substitute the question, “are the claims of our moral nature good for human life?” for the question, “are moral claims true?” They identify a certain faculty for approval or disapproval as giving force to moral claims, and then ask whether, on reflection, we can approve of that faculty of approval itself. This test requires in the first instance that the faculty of moral approval approve of its own workings. It then looks to whether our other faculties of approval can approve of the moral one: we seek a comprehensive endorsement, by all our modes of approval, of moral approval in particular. The second part of the test asks above all whether the faculty for prudential approval—the faculty by which we applaud or condemn things in accordance with self-interest—can applaud the moral faculty, since the latter often requires us to override our self-interest.