The philosophy, theology, and the profoundly felt and reasoned piety, of the twelfth and thirteenth centuries made up that period’s ultimate intellectual interests. We are not concerned with other matters occupying its attention, save as they bore on man’s supreme beatitude, which was held to consist in his everlasting salvation and all that might constitute his bliss in that unending state. The elements of this blessedness were not deemed to lie altogether in rational cognition and its processes; for the conception of the soul’s beatitude was catholic; and while with some men the intellectual elements were dominant, with others salvation’s summit was attained along the paths of spiritual emotion.
Obviously, from the side of the emotions, there could come no large and lasting happiness, unless emotional desire and devotion were directed to that which might also satisfy the mind, or at all events, would not conflict with its judgment. Hence the emotional side of the ultimate mediaeval ideal was pietistic; because the mediaeval dogmatic faith regarded the emotional impulses between one human being and another as distracting, if not wicked. Such mortal impulses were so very difficult to harmonize with the eternal beatitude which consisted in the cognition and love of God. This principle was proclaimed by monks and theologians, or philosophers; it was even recognized (although not followed) in the literature which glorified the love of man and woman, but in which the lover-knight so often ends a hermit, and the convent at last receives his sinful mistress. On the other hand, reason, with its practical and speculative knowledge, is sterile when unmixed with piety and love. This is the sum of Bonaventura’s fervid arguments, and is as clearly, if more quietly, recognized by Aquinas, with whom fides without caritas is informis, formless, very far indeed from its true actuality or realization.
Thus, for the full realization of man’s highest good in everlasting salvation, the two complementary phases of the human spirit had to act and function in concord. Together they must realize themselves in such catholic expression as should exclude only the froward or evil elements, non-elements rather, of man’s nature. Both represent ultimate mediaeval interests and desires; and perhaps deep down and very intimately, even inscrutably, they may be one, even as they clearly are complementary phases of the human soul. Yet with certain natures who perhaps fail to hold the balance between them, the two phases seem to draw apart, or, at least, to evince themselves in distinct expression, and indeed in all men they are usually distinguishable.
Generally speaking, the conception of man’s divinely mediated salvation, and of the elements of human being which might be carried on, and realized in a state of everlasting beatitude, prescribed the range of ultimate intellectual interests for the Middle Ages. The same had been despotically true of the patristic period. Augustine would know God and the soul; Ambrose expressed equally emphatic views upon the vanity of all knowledge that did not contribute to an understanding of the Christian Faith. This view was held with temperamental and barbarizing narrowness by Gregory the Great. It was admitted, as of course, throughout the Carolingian period, although humanistically-minded men played with the pagan literature. Nor was it seriously disputed in the eleventh or twelfth century, when men began to delight in dialectic, and some cared for pagan literature; nor yet in the thirteenth when an increasing number were asking many things from philosophy and natural knowledge, which had but distant bearing on the soul’s salvation. One of these men was Roger Bacon, whose scientific studies were pursued with ceaseless energy. But he could also state emphatically the principle of the worthlessness of whatever does not help men to understand the divine truths by which they are saved. In Bacon’s time, the love of knowledge was enlarging its compass, while, really or nominally as the individual case might be, the criterion of relevancy to the Faith still obtained, and set the topics with which men should occupy themselves. All matters of philosophy or natural science had to relate themselves to the summum bonum of salvation in order to possess ultimate human interest. Therefore, if philosophy was to preserve the strongest reason for its existence, it had to remain the handmaid of theology. Still, to be sure, the conception of man’s beatitude would become more comprehensive with the expansion and variegation of the desire for knowledge.
As the summum bonum of salvation prescribed the topics of ultimate intellectual interest for the Middle Ages, so the stress which it laid upon one topic rather than another tended to direct their ordering or classification, as well as the proportion of attention devoted to each one. Likewise the form or method of presentation was controlled by the authority of the Scriptural statement of the way and means of salvation, and the well-nigh equally authoritative interpretation of the same by the beatified Fathers. Thus the nature of the summum bonum and the character of its Scriptural statement and patristic exposition suggested the arrangement of topics, and set the method of their treatment in those works of the twelfth and thirteenth centuries which afford the most important presentations of the ultimate intellectual interests of that time. Obvious examples will be Abaelard’s Sic et non and his Theologia, Hugo of St. Victor’s De sacramentis, the Lombard’s Books of Sentences, and the Summa theologiae of Thomas Aquinas.
It will be seen in the next chapter that the arrangement of topics in these comprehensive treatises differed from what would have been evolved through the requirements of a systematic presentation of human knowledge. Aquinas sets forth the reasons why one mode of treatment is suitable to philosophy and another to sacred science, and why the latter may omit matters proper for the former, or treat them from another point of view. The supremacy of sacred science is incidentally shown by the argument. In his Contra Gentiles[420] chapter four, book second, bears the title: “Quod aliter considerat de creaturis Philosophus et aliter Theologus” (“That the philosopher views the creation in one way and the theologian in another”). In the text he says:
“The science (doctrina) of Christian faith considers creatures so far as there may be in them some likeness of God, and so far as error regarding them might lead to error in things divine.... Human philosophy considers them after their own kind, and its parts are so devised as to correspond with the different classes (genera) of things; but the faith of Christ considers them, not after their own kind, as for example, fire as fire, but as representing the divine altitude.... The philosopher considers what belongs to them according to their own nature; the believer (fidelis) regards in creatures only what pertains to them in their relationship to God, as that they are created by Him and subject to Him. Wherefore the science of the Faith is not to be deemed incomplete, if it passes over many properties of things, as the shape of the heaven or the quality of motion.... It also follows that the two sciences do not proceed in the same order. With philosophy, which regards creatures in themselves, and from them draws on into a knowledge of God, the first consideration is in regard to the creatures and the last is as to God. But in the science of faith, which views creatures only in their relationship to God (in ordine ad Deum), the first consideration is of God, and next of the creatures.”
Obviously sacra doctrina, which is to say, theologia, proceeds differently from philosophia humana, and evidently it has to do with matters of ultimate importance, and therefore of ultimate intellectual interest. The passage quoted from the Contra Gentiles may be taken as introductory to the more elaborate statement at the beginning of his Summa theologiae, where Thomas sets forth the principles by which sacra doctrina is distinguished from the philosophicae disciplinae, to wit, the various sciences of human philosophy:
“It was necessary to human salvation that there should be a science (doctrina) according with divine revelation, besides the philosophical disciplines which are pursued by human reason. Because man was formed (ordinatur) toward God as toward an end exceeding reason’s comprehension. That end should be known to men, who ought to regulate their intentions and actions toward an end. Wherefore it was necessary for salvation that man should know certain matters through revelation, which surpass human reason.”
Thomas now points out that, on account of many errors, it also was necessary for man to be instructed through divine revelation as to those saving truths concerning God which human reason was capable of investigating. He next proceeds to show that sacra doctrina is science.