Virtue, then, has to deal with feelings or passions and with outward acts, in which excess is wrong and deficiency also is blamed, but the mean amount is praised and is right—both of which are characteristics of virtue.
Virtue, then, is a kind of moderation ( μεσότης τις ) 26 inasmuch as it aims at the mean or moderate amount ( τὸ μέσον ).
Again, there are many ways of going wrong (for evil is infinite in nature, to use a Pythagorean figure, while good is finite), but only one way of going right; so that the one is easy and the other hard—easy to miss the mark and hard to hit. On this account also, then, excess and deficiency are characteristic of vice, hitting the mean is characteristic of virtue: