 Hume’s indebtedness to Greek ethics can be seen even more clearly in his discussion of the natural virtues. Of these, one important group (consisting of courage, magnanimity, ambition, and others) is based on, or may even be a form of, self-esteem: “[W]hatever we call heroic virtue, and admire under the character of greatness and elevation of mind, is either nothing but a steady and well-established pride and self-esteem, or partakes largely of that passion. Courage … and all the other shining virtues of that kind, have plainly a strong mixture of self-esteem in them, and derive a great part of their merit from that origin” (Hume, Treatise, 599–600). Yet these virtues based on self-esteem must be tempered by a second group that includes generosity, compassion, fidelity, and friendship; otherwise traits like courage are “fit only to make a tyrant and public robber” (Hume, Treatise, 603). This second group of virtues is based on broadly-based feelings of good will, affection, and concern for others.