The Psalmist says, "We went through fire and water;" nor is it possible to imagine trials fiercer or more various than those from which Catholicism has come forth uninjured, as out of the Egyptian sea or the Babylonian furnace. First of all were the bitter persecutions of the Pagan Empire in the early centuries; then its sudden conversion, the liberty of Christian worship, the development of the cultus sanctorum, and the reception of Monachism into the ecclesiastical system. Then came the irruption of the barbarians, and the occupation by them of the orbis terrarum from the North, and by the Saracens from the South. Meanwhile the anxious and protracted controversy concerning the Incarnation hung like some terrible disease upon the faith of the Church. Then came the time of thick darkness; and afterwards two great struggles, one with the material power, the other with the intellect, of the world, terminating in the ecclesiastical monarchy, and in the theology of the schools. And lastly came the great changes consequent upon the controversies of the sixteenth century. Is it conceivable that any one of those heresies, with which ecclesiastical history abounds, should have gone through a hundredth part of these trials, yet have come out of them so nearly what it was before, as Catholicism has done? Could such a theology as Arianism have lasted through the scholastic contest? or Montanism have endured to possess the world, without coming to a crisis, and failing? or could the imbecility of the Manichean system, as a religion, have escaped exposure, had it been brought into conflict with the barbarians of the Empire, or the feudal system? 

A similar contrast discovers itself in the respective effects and fortunes of certain influential principles or usages, which have both been introduced into the Catholic system, and are seen in operation elsewhere. When a system really is corrupt, powerful agents, when applied to it, do but develope that corruption, and bring it the more speedily to an end. They stimulate it preternaturally; it puts forth its strength, and dies in some memorable act. Very different has been the history of Catholicism, when it has committed itself to such formidable influences. It has borne, and can bear, principles or doctrines, which in other systems of religion quickly degenerate into fanaticism or infidelity. This might be shown at great length in the history of the Aristotelic philosophy within and without the Church; or in the history of Monachism, or of Mysticism;—not that there has not been at first a conflict between these powerful and unruly elements and the Divine System into which they were entering, but that it ended in the victory of Catholicism. The theology of St. Thomas, nay of the Church of his period, is built on that very Aristotelism, which the early Fathers denounce as the source of all misbelief, and in particular of the Arian and Monophysite heresies. The exercises of asceticism, which are so graceful in St. Antony, so touching in St. Basil, and so awful in St. Germanus, do but become a melancholy and gloomy superstition even in the most pious persons who are cut off from Catholic communion. And while the highest devotion in the Church is the mystical, and contemplation has been the token of the most singularly favoured Saints, we need not look deeply into the history of modern sects, for evidence of the excesses in conduct, or the errors in doctrine, to which mystics have been commonly led, who have boasted of their possession of reformed truth, and have rejected what they called the corruptions of Catholicism. 

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