[220] Each then of these dispositions has, as it were, flocks and herds. The one which desires external things has for its flock, gold and silver, and all those things which are the materials and furniture of wealth; and, moreover, arms, engines, triremes, armies of infantry and cavalry, and fleets of ships, and all kinds of provisions to procure dominion, by which firm authority is secured. But the lover of excellence has for his flock the doctrines of each individual virtue, and its speculations respecting wisdom.