Father Slater draws attention to the fact that Dr. Cunningham overlooked to some extent the importance of common estimation in arriving at the just price. He points out that, far from objects being invested with some immutable objective value, their value was in fact determined by the price which the community as a whole was willing to pay for them: 'As the value in exchange will be determined by what the members of the community at the time are prepared to give, … it will be determined by the social estimation of its utility for the support of life and its scarcity. It will depend upon its capacity to satisfy the wants and desires of the people with whom commercial transactions are possible and practicable. Father Slater then goes on categorically to refute Dr. Cunningham's presentation of the objectivity of price: 'All that that doctrine asserts is that there should be, and that there is, an equivalent in social value between the commodity and its price at a certain time and in a certain place; it says nothing whatever about the stability or permanence of prices at different times and at different places. By maintaining that the just price did not depend upon the valuation of the individual buyer or seller the mediæval doctors did not dream of making it intrinsic to the object.' In the work on Moral Theology, to which we have referred, expressions occur which lead one to believe that Father Slater did not see any great difference between the mediæval just price arrived at by common estimation and the modern normal or market price arrived at by open competition. Thus, in endeavouring to correct Dr. Cunningham's misunderstanding, Father Slater seems to have gone too far in the other direction, and his position has been ably and, in our judgment, successfully, controverted by Father Kelleher.
The point at issue between the upholders of the two opposing views on just price is well stated by Father Kelleher in the first of his articles on the subject: 'We must try to find out whether the just and fair price determined the rate of exchange, or whether the rate of exchange, being determined without an objective standard and merely according to the play of human motives, determines what we call the just and fair price.'[1] We have already demonstrated that the common estimation referred to by the mediæval doctors was something quite apart from the modern higgling in the market; and that, far from being merely the result of unbridled competition on both sides, it was rather the considered judgment of the best-informed members of the community. As we have seen, even Dr. Cunningham admits that there was a fundamental difference between the common estimation of the scholastics and the modern competitive price. This is clearly demonstrated by Father Kelleher, who further establishes the proposition that the modern price is purely subjective, and that no subjective price can rest on an ethical basis. The question at issue therefore between what we may call the subjective and objective schools is not whether the sale price was determined by competition in the modern sense, but whether the common estimation of those best qualified to form an opinion on the subject in itself determined the just price, or whether it was merely the most reliable evidence of what the just price in fact was at a particular moment.
[Footnote 1: Irish Theological Quarterly, vol. ix. p. 41.]
Father Kelleher draws attention to the fact that Aquinas in his article on price did not specifically affirm that the just price was objective, but he explains this omission by saying that the objectivity of the price was so well and universally understood that it was unnecessary expressly to restate it. Indeed, as we saw above, the teaching of Aquinas on price left a great deal to be supplied by later writers, not because he was in any doubt about the subject, but because the theory was so well understood. 'Not even in St. Thomas can we find a formal discussion of the moral obligation of observing an objective equivalence in contracts of buying and selling. He simply took it for granted, as, indeed, was inevitable, seeing that, up to his time and for long after, all Catholic thought and legislation proceeded on that hypothesis. But that he actually did take it for granted, he has given many clear indications in his article on Justice which leave us no room for reasonable doubt.'[1] As Father Kelleher very cogently points out, the discussion in Aquinas's article on commerce, whether it was lawful to buy cheap and sell dear, very clearly indicates that the author maintained the objective theory, because if the just price were simply determined by what people were willing to give, this question could not have arisen.
[Footnote 1: Irish Theological Quarterly, vol. x. p. 165.]
Nor is the fact that the just price admitted of a certain elasticity an argument in favour of its being subjective. Father Kelleher fully admits that the common estimation was the general criterion of just price, and, of course, the common estimation could not, of its very nature, be rigid and immutable. Commodities should, indeed, exchange according to their objective value, but, even so, commodities could not carry their value stamped on their faces. Even if we assume that the standard of exchange was the cost of production, there would still remain room for a certain amount of difference of opinion as to what exactly their value would be in particular instances. Suppose that the commodity offered for sale was a suit of clothes, in estimating its value on the basis of the cost of production, opinions might differ as to the precise amount of time required for making it, or as to the cost of the cloth out of which it was made. Unless recourse was to be had to an almost interminable process of calculations, nobody could say authoritatively what precisely the value was, and in practice the determination of value had perforce to be left to the ordinary human estimate of what it was, which of its very nature was bound to admit a certain margin of fluctuation. Thus we can easily understand how, even with an objective standard of value, the just price might be admitted to vary within the limits of the maximum as it might be expected to be estimated by sellers and the minimum as it would appear just to buyers. The sort of estimation of which St. Thomas speaks is therefore nothing else than a judgment, which, being human, is liable to be slightly in excess or defect of the objective value about which it is formed.'[1] As Father Kelleher puts it on a later page, 'There is a sense certainly in which, with a solitary exception in the case of wages, it may be said with perfect truth that the common estimation determines the just price. That is, the common estimation is the proximate practical criterion.'[2]
[Footnote 1: Irish Theological Quarterly, vol. x. p. 166.]
[Footnote 2: P. 173.]
Father Kelleher uses in support of his contention a very ingenious argument drawn from the doctrine of usury. As we said in the first chapter, and as we shall prove in detail in the next section, the prohibition of usury was simply one of the applications of the theory of equivalence in contracts—in other words, it was the determination of the just price to be paid in an exchange of money for money. If, asks Father Kelleher, the common estimation was the final test of just price, why was not moderate usury allowed? That the general opinion of the community in the Middle Ages was undoubtedly in favour of allowing a reasonable percentage on loans is shown by the constant striving of the Church to prevent such a practice. Nevertheless the Church did not for a moment relax its teaching on usury in spite of the almost universal judgment of the people. Here, therefore, is a clear example of one contract in which the standard of value is clearly objective, and it is only reasonable to draw the conclusion that the same standard which applied in contracts of the exchange of money should apply in contracts of the sale of other articles.
Father Kelleher's contention seems to be completely supported by the passage from Nider which we have cited above, to the effect that the common estimation ceases to be the final test of the just price when the contracting parties know or believe that the common estimation has erred.[1] This seems to us clearly to show that the common estimation was but the most generally received test of what the just price in fact was, but that it was in no sense a final or irrefutable criterion.[2]