 Similarly, as is entailed by the epistemological principle that nature is known by capacities, capacities by acts, and acts by their objects (see 1.1(v) above), these basic goods, being the basic objects of will and free action, are the outline of human nature. The is of an adequate account of human nature is dependent upon prior grasp of the oughts of practical reason’s first, good-identifying principles, even though that prior grasp was made possible by that partial understanding of human nature which comes with an understanding of certain lines of causality and possibility. But defending the epistemological priority of the intelligible objects of will in explanations of practical reason does not entail (contrast McInerny 1992) any denial of the metaphysical priority of the naturally given facts about the human makeup.