The work caused immense alarm, and was condemned by the council of Arles,[285] on the ground that it [pg 087] assumed that Christianity was imperfect, and was to be replaced by a superior revelation developing from natural causes. It is doubtful whether the book was really intended to be sceptical. More probably it was mystical. Claiming to be founded on an apocalyptic idea,[286] it was a revival of the Chiliasm which haunted the Christians of Asia Minor in the early centuries; perhaps also it was the utterance of the spiritual yearning which marked the rise of the Franciscan order, and a protest against the worldliness of the times. It was connected too with the longings for political deliverance from the temporal dominion of the Popedom which were now beginning to be felt. In these latter aspects the idea, so far from being false, was an advance. Christianity from time to time admits a progress, but from within rather than from without; a deeper spiritual appreciation of old truths rather than a reception of new ones. The demand for progress becomes a ground for alarm only when it implies that the world has bidden farewell to Christianity, either through the mystical expectation of a Millennial reign which is to supersede it, or through the sceptical belief that our religion has only an historic value, and needs remodelling to meet the requirements of advancing civilization. If the latter was the meaning of this utterance of the Franciscan book, the idea was the germ of the modern conception of the function of Christianity in “the education of the race,” the first statement of which is usually attributed to Lessing.[287]
The same century which gave birth to this mot, expressive of progress in religion, created also another which embodied the idea of the comparative study of religions. This phrase may have different meanings. It may signify the comparison of Christianity with ethnic creeds in its external and internal character, without [pg 088] sacrificing the belief that a divinely revealed element exists in it, which caused it to differ from them in kind as well as degree. Or it may mean a comparison of Christianity with other religions, as equally false with them, equally a deliberate and conscious invention of priestcraft which was the shocking view adopted by writers like Volney in the last century,[288] or else a comparison of it as equally true with them, as equally a psychological development of the religious intelligence, which is the view prevalent in many noted works on the philosophy of history in the present.[289] It was the second of these ideas, expressive of actual incredulity, which existed in the thirteenth century. It is traceable in the imputation made by Gregory IX[290] against the celebrated emperor Frederick II, that he had spoken of Moses, Christ, and Mahomet, as the three great impostors who had respectively deceived the Jews, the Christians, and the Arabs.
The very possibility of the existence of such a comparison presupposes intercourse with disciples of foreign creeds. The Christians now no longer possessed a merely vague knowledge of Jews and Mahometans. The crusades were expiring, the danger which evoked them had subsided, and the enmity which supported them was decaying. Europe had entered into relations of commerce, if not of amity, with Mahometan nations; and through contact with them had come to measure them by an altered standard, and to acquire the idea of comparing religions. Frederick II, to whom this expression is imputed, is stated to have manifested admiration of Mahometan literature, and affection for his Mahometan subjects who afforded him aid in carrying out the plans of civilization which his powerful mind [pg 089] had formed;[291] and it was his indifference to a crusade, induced probably by other causes, which led the Pope to impute to him the blasphemy just quoted. The contact with the East, half a century later, in like manner afforded the pretext for fastening a charge of unbelief on the Knights Templars.[292] Contact with Mahometans had thus, we have reason to believe, created a latitude of thought in many parts of Christendom.
The same idea of the comparison of Christianity with other creeds reappears in a tale of Boccaccio,[293] in which the three great religions are represented under the allegory of three rings which a father gave to his children, so exactly alike that the judges could not decide which was the genuine one of the three, and which the copies. It is also illustrated by the tradition of the existence of a book, entitled “De Tribus Impostoribus,” which has been attributed almost to every great name in the middle ages which was conspicuous for opposition to the claims of the church, or for uneasiness under the pressure of its dogmatic teaching. The existence of the book is legendary: no one ever saw it: and the two distinct works which now bear the title can be shown to have been composed respectively in the sixteenth and seventeenth centuries: but the legend is a witness to the fact of the existence of the idea which the book was said to embody. ([20])
It is perhaps in some degree to the influence of the doctrine of absorption in the Mahometan philosophy of Averroes, a commentator on Aristotle, who was the contemporary of Abélard, that we may attribute the disbelief in immortality to which we find a tendency toward the close of the thirteenth and during the fourteenth century.[294] Though it is probable that the indirect [pg 090] influence of the Arabic philosophy was felt earlier, in stimulating a demand for inquiry, a disposition to make dogmas submit to the test of reason, which has been shown to be the earliest form of mediæval doubt; yet it was not until the thirteenth century that the works of Averroes definitely influenced scholasticism, through the teaching of Michael Scot and Alexander Hales, and by means of the rapidity of intellectual communication which forms so singular a feature in mediæval history, spread their influence in Italy as well as in France. It was at this time that the doctrine of Averroes was attacked by Aquinas; and though the amount of its influence can hardly be estimated, we have the means of tracing the growth of dislike to its author in Christian lands, which is an incidental probability of the increasing danger to Christianity arising from it. In the middle of the thirteenth century the Franciscans study him without evincing hatred. About the end of it Dante describes him still without reproaches, though he places him in the Inferno along with other heathen philosophers:[295] but half a century later, in the pictures of the last judgment which exist in several states of Italy, each a little historic satire with its own peculiarities, we find Averroes depicted as the type of incredulity and blasphemy. In a fresco of the Campo Santo of Pisa, executed about 1335, when perhaps the recent canonization of Aquinas as an opponent of Averroes had directed attention to the influence of the Arabic philosopher, Orcagna has placed a separate bolgia, the lowest in his hell, for three persons,—Mahomet, Anti-christ, and Averroes.[296]
The disbelief of immortality was however too obvious a temptation in a corrupt age, as well as too generally spread, especially in the next century, to be wholly attributable to the subtle influence of the doctrine of absorption of the Arabic philosophy. A mediæval [pg 091] English poet[297] attributes incredulity to the higher classes of his age; and Dante, in that poem which is a romantic picture of his contemporaries or predecessors, when devoting one circle of the Inferno to the habitation of the “more than a thousand” of those “who make the soul die with the body,” attributes the cause of the sin to Epicureanism, a moral and not an intellectual cause.[298] It is a sad and humiliating thought to reflect also that a cause which must have increased incredulity, if it did not create it, was to be found in the vices of the clergy, especially near the papal court of Avignon. Most of the distinguished laymen whom history records as evincing unbelief belonged to the political party, which strove to repress the political centralization and temporal authority of the church; and it is to be feared that the causes just named were the means of repelling more deeply from religion the hearts of such persons whose interests or whose vices already led them to hate its promoters.[299]
We have thus collected the few traces which mark the history of free thought in the second great crisis of church history, and incidentally illustrated its connexion with social movements as well as religious, and shown its relation to intellectual or moral causes. On the intellectual side we have witnessed the scholastic philosophy giving activity to the spirit of change, and contact with Mahometan life and opinion imparting the latitude to Christian thought which passed into incredulity. On the moral we have noticed that the effect of social wants or of actual viciousness gave birth respectively to religious restlessness, or to actual disbelief of the supernatural. The church of the time was not unaware of the movement. In part it tried to repress it by persecution and by the Inquisition; but in part also by the lawful weapon of spiritual contest. The [pg 092] grand works of defence of the thirteenth century, which adjusted scholastic philosophy to dogmatic theology, and the spiritual activity of the mendicant orders, were real and lawful means of victory, appealing respectively to the intellect and heart.
The moral judgment formed on the movement seen in the whole period must vary with the phase of it viewed. The attack is not, like those of the early unbelievers, a struggle with which the sympathies of Christians cannot be enlisted. The darker aspects of it partake indeed of the same character; but it embodies a better element, a nobler form of movement, tainted perhaps with doubt, but not with disbelief; viz. the attempt of the human mind to assert its rights in philosophy, theology, and politics; and as the epoch closes, the great truth has made itself felt in the world as the result of the contest, that Christianity is supreme only within its own sphere, which it is the problem of religious philosophy to discover; that freedom of inquiry is to be used outside the boundary, but that speculation must expire in adoration within it.
A new crisis may be considered to commence in the fifteenth century, in consequence of the introduction of fresh influences through the classical revival. Yet as the two periods are connected in time, the transition is not sudden: the old influences gradually vanish away; the new ones had been slowly preparing before they became distinctly evident. The intellectual and social activity of the past period had been the means of educating the mind of Europe for the reception of the new forces which were now beginning to operate.[300]