Book 2.34
"What," say you, "can a man repay a benefit, though he does nothing?" He has taken the first step, he has offered you a good thing with good feeling, and, which is the characteristic of friendship, has placed you both on the same footing. In the next place, a benefit is not repaid in the same manner as a loan: you have no reason for expecting me to offer you any payment; the account between us depends upon the feelings alone. What I say will not appear difficult, although it may not at first accord with your ideas, if you will do me the favour to remember that there are more things than there are words to express them. There is an enormous mass of things without names, which we do not speak of under distinctive names of their own, but by the names of other things transferred to them. We speak of our own foot, of the foot of a couch, of a sail, or of a poem; we apply the word 'dog' to a hound, a fish, and a star. Because we have not enough words to assign a separate name to each thing, we borrow a name whenever we want one. Bravery is the virtue which rightly despises danger, or the science of repelling, sustaining, or inviting dangers: yet we call a brave man a gladiator, and we use the same word for a good-for-nothing slave, who is led by rashness to defy death. Economy is the science of avoiding unnecessary expenditure, or the art of using one's income with moderation: yet we call a man of mean and narrow mind, most economical, although there is an immeasurable distance between moderation and meanness. These things are naturally distinct, yet the poverty of our language compels us to call both these men economical, just as he who views slight accidents with rational contempt, and he who without reason runs into danger are alike called brave. Thus a benefit is both a beneficent action, and also is that which is bestowed by that action, such as money, a house, an office in the state: there is but one name for them both, though their force and power are widely different.