This brief account of the ground which Oresme covered, and the conclusions at which he arrived, will enable us to appreciate his importance. Although his clear elucidation of the principles which govern the questions of money was not powerful enough to check the financial abuses of the sovereigns of the later Middle Ages, they exercised a profound influence on the thought of the period, and were accepted by all the theologians of the fifteenth century.[2] [Footnote 2: Biel, _op. cit._, IV. xv. 11; _De Monetarum Potestate et Utilitate_, referred to in Jourdain, _op. cit._, p. 34.] CHAPTER IV CONCLUSION We have now passed in review the principal economic doctrines of the mediæval schoolmen. We do not propose to attempt here any detailed criticism of the merits or demerits of the system which we have but briefly sketched. All that we have attempted to do is to present the doctrines in such a way that the reader may be in a position to pass judgment on them. There is one aspect of the subject, however, to which we may be allowed to direct attention before concluding this essay. It is the fashion of many modern writers, especially those hostile to the Catholic Church, to represent the Middle Ages as a period when all scientific advance and economic progress were impeded, if not entirely prevented, by the action of the Church. It would be out of place to inquire into the advances which civilisation achieved in the Middle Ages, as this would lead us into an examination of the whole history of the period; but we think it well to inquire briefly how far the teaching of the Church on economic matters was calculated to interfere with material progress. This is the lowest standard by which we can judge the mediæval economic teaching, which was essentially aimed at the moral and spiritual elevation of mankind; but it is a standard which it is worth while to apply, as it is that by which the doctrines of the scholastics have been most generally condemned by modern critics. To test the mediæval economic doctrine by this, the lowest standard, it may be said that it made for the establishment and development of a rich and prosperous community. We may summarise the aim of the mediæval teaching by saying that, in the material sphere, it aimed at extended production, wise consumption, and just distribution, which are the chief ends of all economic activity.