Nor is the natural always better than the miraculous. So we can't equate virtue with the natural, or vice with the unnatural. Later Refinements Hume's later writings give a larger role to reason in ethics. Once we understand the facts, we see how we feel from an impartial standpoint. So ethics needs both reason and feeling.
Impartiality distinguishes moral feelings from other positive or negative feelings.
If so, then Hume held the ideal observer theory. This set has 19 problems.