Christianity had lost its simplicity and glory in the hands of its most devoted friends long before the alliance between the church and the world had taken place. The copious history of this internal perversion would afford a worthy subject of diligent inquiry; and though materials for a complete explication of the process of corruption are not in existence, enough remains to invite and reward the necessary labor. * * * * * The enthusiasm of the ancient Church presents itself under several distinct forms, among which the following may be mentioned as the most conspicuous:—the enthusiasm of voluntary martyrdom; that of miraculous pretension; that of prophetical interpretation, or millenarianism; that of the mystical exposition of Scripture; and that of monachism. Of these, the last, whether or not it was truly the parent of the other kinds, includes them all as parts of itself; for whatever perversions of Christianity were chargeable upon the sentiments and practices of the general church, the same belonged by eminence to the recluses. A review of the principles and the ingredients of this system will better accord with the limits and design of this essay, than an extended examination of facts under the several heads just named. * * * * * A strict equity has by no means always been observed by protestant writers in their criminations of the Romish Church. With the view of aggravating the just and necessary indignation of mankind against the mother of corruption, it has been usual to lay open the concealments of the monastery; and with materials before him so various and so copious, even the dullest writer might cheaply be entertaining, eloquent, and vigorous. Meantime it is not duly considered, or not fairly stated, that the reprobation passes back, in full force, to an age much more remote than that of the supremacy of Rome. The bishops of Rome did but avail themselves of the aid of a system which had reached a full maturity without their fostering care; a system which had been sanctioned and cherished, almost without an exception, by every father of the church, eastern and western; which had come down in its elements even from the primitive age, and which had won for itself a suffrage so general, if not universal, that he must have possessed an extraordinary measure of wisdom, courage, and influence, who should have ventured beyond a cautious and moderated censure of its more obvious abuses.