fifteenth centuries, the general political doctrine of Aquinas was maintained with merely subordinate modifications.'[1] 'The canonist doctrine of the fifteenth century,' according to Sir William Ashley, 'was but a development of the principles to which the Church had already given its sanction in earlier centuries. It was the outcome of these same principles working in a modified environment. But it may more fairly be said to present a system of economic thought, because it was no longer a collection of unrelated opinions, but a connected whole. The tendency towards a separate department of study is shown by the ever-increasing space devoted to the discussion of general economic topics in general theological treatises, and more notably still in the manuals of casuistry for the use of the confessional, and handbooks of canon law for the use of ecclesiastical lawyers. It was shown even more distinctly by the appearance of a shoal of special treatises on such subjects as contracts, exchange, and money, not to mention those on usury.'[2] In all this development, however, the principles enunciated by Aquinas, and through him, by Aristotle, though they may have been illustrated and applied to new instances, were never rejected. The study of the writers of this period is therefore the study of an organic whole, the germ of which is to be found in the writings of Aquinas.[3]

[Footnote 1: Ingram, op. cit., p. 35.]

[Footnote 2: Op. cit., vol. i. pt. ii. p. 382.]

[Footnote 3: The volume of literature which bears more or less on economic matters dating from the fourteenth and fifteenth centuries is colossal. By far the best account of it is to be found in Endemann's Studien in der Romanisch-canonistischen Wirthschafts- und Rechtslehre, vol. i. pp. 25 et seq. Many of the more important works written during the period are reprinted in the Tractatus Universi Juris, vols. vi. and vii. The appendix to the first chapter of Reseller's Geschichte also contains a valuable account of certain typical writers, especially of Langenstein and Henricus de Hoyta. Brants gives a useful bibliographical list of both mediæval and modern authorities in the second chapter of his Théories économiques aux xiii^{e} et xiv^{e} siècles. Those who desire further information about any particular writer of the period will find it in Stintzing, Literaturgeschichte des röm. Rechts, or in Chevallier's Répertoire historique des Sources du moyen âge; Bio-bibliographie. The authorship of the treatise De Regimine Principum, from which we shall frequently quote, often attributed to Aquinas, is very doubtful. The most probable opinion is that the first book and the first three chapters of the second are by Aquinas, and the remainder by another writer. (See Franck, Réformateurs et Publicistes, vol. i. p. 83.)]

§ 3. Teaching.

We shall confine our attention in this essay to the economic teaching of the Middle Ages, and shall not deal with the actual practice of the period. It may be objected that a study of the former without a study of the latter is futile and useless; that the economic teaching of a period can only be satisfactorily learnt from a study of its actual economic institutions and customs; and that the scholastic teaching was nothing but a casuistical attempt to reconcile the early Christian dogmas with the ever-widening exigencies of real life. Endemann, for instance, devotes a great part of his invaluable books on the subject to demonstrating how impracticable the canonist teaching was when it was applied to real life, and recounting the casuistical devices that were resorted to in order to reconcile the teaching of the Church with the accepted mercantile customs of the time. Endemann, however, in spite of his colossal research and unrivalled acquaintance with original authorities, was essentially hostile to the system which he undertook to explain, and thus lacked the most essential quality of a satisfactory expositor, namely, sympathy with his subject. He does not appear to have realised that development and adaptability to new situations, far from being marks of impracticability, are rather the signs of vitality and of elasticity. This is not the place to discuss how far the doctrine of the late fifteenth differed from that of the early thirteenth century; that is a matter which will appear below when each of the leading principles of scholastic economic teaching is separately considered; it is sufficient to say here that we agree entirely with Brants, in opposition to Endemann, that the change which took place in the interval was one of development, and not of opposition. 'The law,' says Brants, 'remained identical and unchanged; justice and charity—nobody can justly enrich himself at the expense of his neighbour or of the State, but the reasons justifying gain are multiplied according as riches are developed.'[1] 'The canonist doctrine of the fifteenth century was but a development of the principles to which the Church had already given its sanction in earlier centuries. It was the outcome of these same principles working in a modified environment.'[2] With these conclusions of Brants and Ashley we are in entire agreement.

[Footnote 1: Brants, op. cit., p. 9.]

[Footnote 2: Ashley, op. cit., p. 381.]

Let us say in passing that the assumption that the mediæval teaching grew out of contemporary practice, rather than that the latter grew out of the former, is one which does not find acceptance among the majority of the students of the subject. The problem whether a correct understanding of mediæval economic life can be best attained by first studying the teaching or the practice is possibly no more soluble than the old riddle of the hen and the egg; but it may at least be argued that there is a good deal to be said on both sides. The supporters of the view that practice moulded theory are by no means unopposed. There is no doubt that in many respects the exigencies of everyday commercial concerns came into conflict with the tenets of canon law and scholastic opinion; but the admission of this fact does not at all prove that the former was the element which modified the latter, rather than the latter the former. In so far as the expansion of commerce and the increasing complexity of intercourse raised questions which seemed to indicate that mercantile convenience conflicted with received teaching, it is probable that the difficulty was not so much caused by a contradiction between the former and the latter, as by the fact that an interpretation of the doctrine as applied to the facts of the new situation was not available before the new situation had actually arisen. This is a phenomenon frequently met with at the present day in legal practice; but no lawyer would dream of asserting that, because there had arisen an unprecedented state of facts, to which the application of the law was a matter of doubt or difficulty, therefore the law itself was obsolete or incomplete. Examples of such a conflict are familiar to any one who has ever studied the case law on any particular subject, either in a country such as England, where the law is unwritten, or in continental countries, where the most exhaustive and complete codes have been framed. Nevertheless, in spite of the occurrence of such difficulties, it would be foolish to contend that the laws in force for the time being have not a greater influence on the practice of mercantile transactions than the convenience of merchants has upon the law. How much more potent must this influence have been when the law did not apply simply to outward observances, but to the inmost recesses of the consciences of believing Christians!

The opinion that mediæval teaching exercised a profound effect on mediæval practice is supported by authorities of the weight of Ashley, Ingram, and Cunningham,[1] the last of whom was