Aquinas and the Just Price

by St. Thomas Aquinas (1225 ? 1274) , Translated by Fathers of the English Dominican Province, Originally written 1251-1273

Excerpts from Summa Theologica, Second Part of the Second Part, Question 77

Summary

The philosopher and theologian St. Thomas Aquinas (1225-1274) made some significant contributions to the economic thinking of the Middle Ages.  Of course, most of his views were based on his reading of Aristotle and of canonical Christian texts, rather than any modern notions of economic theory.  Yet, some of his ideas still resonate today.  In particular, the idea of a “just price” for a good – as distinct from economists’ notion of a market equilibrium – exerts an influence on contemporary popular views.  The ongoing debate about how to set prices on intellectual property (e.g., software, music, or medicine) raises some of these same issues with renewed relevance.

In many ways, Aquinas was a progressive.  In contrast to some early thinkers who dismissed all profit-making as inherently unjust and sinful, Aquinas recognized the benefits to society of trade and the need for business to earn a ‘normal’ profit and to be compensated for the risks it bore.  His writings thus contain inklings of ideas like producers’ long-run costs.  On the other hand, there is no notion of an invisible hand guiding private markets to equitable outcomes.  Aquinas appeals to both human conventions and divine law against deceitful pricing and price-gouging.  “To sell a thing for more than its worth, or to buy it for less than its worth, is in itself unjust and unlawful.”

Whether it is lawful to sell a thing for more than its worth?

  Objection 1: It would seem that it is lawful to sell a thing for more than its worth. In the commutations of human life, civil laws determine that which is just. Now according to these laws it is just for buyer and seller to deceive one another (Cod. IV, xliv, De Rescind. Vend. 8,15): and this occurs by the seller selling a thing for more than its worth, and the buyer buying a thing for less than its worth. Therefore it is lawful to sell a thing for more than its worth

  Objection 2: Further, that which is common to all would seem to be natural and not sinful. Now Augustine relates that the saying of a certain jester was accepted by all, "You wish to buy for a song and to sell at a premium," which agrees with the saying of Prov. 20:14, "It is naught, it is naught, saith every buyer: and when he is gone away, then he will boast." Therefore it is lawful to sell a thing for more than its worth.

  Objection 3: Further, it does not seem unlawful if that which honesty demands be done by mutual agreement. Now, according to the Philosopher [Aristotle] (Ethic. viii, 13), in the friendship which is based on utility, the amount of the recompense for a favor received should depend on the utility accruing to the receiver: and this utility sometimes is worth more than the thing given, for instance if the receiver be in great need of that thing, whether for the purpose of avoiding a danger, or of deriving some particular benefit. Therefore, in contracts of buying and selling, it is lawful to give a thing in return for more than its worth.

Aquinas' reply: the just price

  On the contrary, It is written (Mt. 7:12): "All things . . . whatsoever you would that men should do to you, do you also to them." But no man wishes to buy a thing for more than its worth. Therefore no man should sell a thing to another man for more than its worth.

  I answer that, It is altogether sinful to have recourse to deceit in order to sell a thing for more than its just price, because this is to deceive one's neighbor so as to injure him. Hence Tully says (De Offic. iii, 15): "Contracts should be entirely free from double-dealing: the seller must not impose upon the bidder, nor the buyer upon one that bids against him."

But, apart from fraud, we may speak of buying and selling in two ways. First, as considered in themselves, and from this point of view, buying and selling seem to be established for the common advantage of both parties, one of whom requires that which belongs to the other, and vice versa, as the Philosopher states (Polit. i, 3). Now whatever is established for the common advantage, should not be more of a burden to one party than to another, and consequently all contracts between them should observe equality of thing and thing. Again, the quality of a thing that comes into human use is measured by the price given for it, for which purpose money was invented, as stated in Ethic. v, 5. Therefore if either the price exceed the quantity of the thing's worth, or, conversely, the thing exceed the price, there is no longer the equality of justice: and consequently, to sell a thing for more than its worth, or to buy it for less than its worth, is in itself unjust and unlawful.

Secondly we may speak of buying and selling, considered as accidentally tending to the advantage of one party, and to the disadvantage of the other: for instance, when a man has great need of a certain thing, while an other man will suffer if he be without it. In such a case the just price will depend not only on the thing sold, but on the loss which the sale brings on the seller. And thus it will be lawful to sell a thing for more than it is worth in itself, though the price paid be not more than it is worth to the owner. Yet if the one man derive a great advantage by becoming possessed of the other man's property, and the seller be not at a loss through being without that thing, the latter ought not to raise the price, because the advantage accruing to the buyer, is not due to the seller, but to a circumstance affecting the buyer. Now no man should sell what is not his, though he may charge for the loss he suffers.

On the other hand if a man find that he derives great advantage from something he has bought, he may, of his own accord, pay the seller something over and above: and this pertains to his honesty.

Whether, in trading, it is lawful to sell a thing at a higher price than what was paid for it?

  Objection 1: It would seem that it is not lawful, in trading, to sell a thing for a higher price than we paid for it. For Chrysostom [*Hom. xxxviii in the Opus Imperfectum, falsely ascribed to St. John Chrysostom] says on Mt. 21:12: "He that buys a thing in order that he may sell it, entire and unchanged, at a profit, is the trader who is cast out of God's temple." Cassiodorus speaks in the same sense in his commentary on Ps. 70:15, "Because I have not known learning, or trading" according to another version [*The Septuagint]: "What is trade," says he, "but buying at a cheap price with the purpose of retailing at a higher price?" and he adds: "Such were the tradesmen whom Our Lord cast out of the temple." Now no man is cast out of the temple except for a sin. Therefore such like trading is sinful.

  Objection 2: Further, it is contrary to justice to sell goods at a higher price than their worth, or to buy them for less than their value, as shown above (Article [1]). Now if you sell a thing for a higher price than you paid for it, you must either have bought it for less than its value, or sell it for more than its value. Therefore this cannot be done without sin.

  Objection 3: Further, Jerome says (Ep. ad Nepot. lii): "Shun, as you would the plague, a cleric who from being poor has become wealthy, or who, from being a nobody has become a celebrity." Now trading would net seem to be forbidden to clerics except on account of its sinfulness. Therefore it is a sin in trading, to buy at a low price and to sell at a higher price.

Aquinas' reply: in support of trade

  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.

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Keywords:
Price, justice, law, divine, Bible, theology, economics, markets, trade, value, utility, advantage, fairness, buying, selling, deceit, fraud, virtue, vice, exchange