In a somewhat analogous sense, the ordinary supposition that we act from norms may supervene psychologically on motivation by interests. For example, I develop a collection of friendships, each of which is rewarding to me in its own ways. I value the friendships for what they do for me, and I spend more time on and develop those that do most for me. I also begin to think of them as normatively valuable. I would strongly assert that they are good—and, of course, they are good, in the sense that they are good for me, which is to say that they benefit me in various ways. Once they are in place, however, I think of them as morally grounded.

Russell Hardin, Trust and Trustworthiness, loc. 417