Q: FOURTH ARTICLE [II-II, Q. 77, Art. 4]

A: On the contrary,
Augustine commenting on Ps. 70:15, "Because I have not known learning," [*Cf. Obj. 1] says: "The greedy tradesman blasphemes over his losses; he lies and perjures himself over the price of his wares. But these are vices of the man, not of the craft, which can be exercised without these vices." Therefore trading is not in itself unlawful.

I answer that,
A tradesman is one whose business consists in the exchange of things. According to the Philosopher (Polit. i, 3), exchange of things is twofold; one, natural as it were, and necessary, whereby one commodity is exchanged for another, or money taken in exchange for a commodity, in order to satisfy the needs of life. Such like trading, properly speaking, does not belong to tradesmen, but rather to housekeepers or civil servants who have to provide the household or the state with the necessaries of life. The other kind of exchange is either that of money for money, or of any commodity for money, not on account of the necessities of life, but for profit, and this kind of exchange, properly speaking, regards tradesmen, according to the Philosopher (Polit. i, 3). The former kind of exchange is commendable because it supplies a natural need: but the latter is justly deserving of blame, because, considered in itself, it satisfies the greed for gain, which knows no limit and tends to infinity. Hence trading, considered in itself, has a certain debasement attaching thereto, in so far as, by its very nature, it does not imply a virtuous or necessary end. Nevertheless gain which is the end of trading, though not implying, by its nature, anything virtuous or necessary, does not, in itself, connote anything sinful or contrary to virtue: wherefore nothing prevents gain from being directed to some necessary or even virtuous end, and thus trading becomes lawful. Thus, for instance, a man may intend the moderate gain which he seeks to acquire by trading for the upkeep of his household, or for the assistance of the needy: or again, a man may take to trade for some public advantage, for instance, lest his country lack the necessaries of life, and seek gain, not as an end, but as payment for his labor.

Reply Obj. 1: The saying of Chrysostom refers to the trading which seeks gain as a last end. This is especially the case where a man sells something at a higher price without its undergoing any change. For if he sells at a higher price something that has changed for the better, he would seem to receive the reward of his labor. Nevertheless the gain itself may be lawfully intended, not as a last end, but for the sake of some other end which is necessary or virtuous, as stated above.

Reply Obj. 2: Not everyone that sells at a higher price than he bought is a tradesman, but only he who buys that he may sell at a profit. If, on the contrary, he buys not for sale but for possession, and afterwards, for some reason wishes to sell, it is not a trade transaction even if he sell at a profit. For he may lawfully do this, either because he has bettered the thing, or because the value of the thing has changed with the change of place or time, or on account of the danger he incurs in transferring the thing from one place to another, or again in having it carried by another. In this sense neither buying nor selling is unjust.

Reply Obj. 3: Clerics should abstain not only from things that are evil in themselves, but even from those that have an appearance of evil. This happens in trading, both because it is directed to worldly gain, which clerics should despise, and because trading is open to so many vices, since "a merchant is hardly free from sins of the lips" [*'A merchant is hardly free from negligence, and a huckster shall not be justified from the sins of the lips'] (Ecclus. 26:28). There is also another reason, because trading engages the mind too much with worldly cares, and consequently withdraws it from spiritual cares; wherefore the Apostle says (2 Tim. 2:4): "No man being a soldier to God entangleth himself with secular businesses." Nevertheless it is lawful for clerics to engage in the first mentioned kind of exchange, which is directed to supply the necessaries of life, either by buying or by selling.

QUESTION 78

OF THE SIN OF USURY (In Four Articles)

We must now consider the sin of usury, which is committed in loans: and under this head there are four points of inquiry:

(1) Whether it is a sin to take money as a price for money lent, which is to receive usury?

(2) Whether it is lawful to lend money for any other kind of consideration, by way of payment for the loan?

(3) Whether a man is bound to restore just gains derived from money taken in usury?

(4) Whether it is lawful to borrow money under a condition of usury?