For centuries the struggle between the Church of Rome and the State raged furiously, so that when we reach the age of Hildebrand (A.D. 1073-1085) we find plots and counterplots the order of the day. It was the height of his ambition to subordinate the State to the Church, and subject the Church to the absolute authority of the Pope. The course pursued by Hildebrand and by aspiring pontiffs who succeeded him resulted in an open conflict between the papacy and the empire. In the persistent contest which followed the papacy gained a decided advantage. That the emperor was commissioned to preside over the temporal affairs of men, while it was left for the pope to guide and govern them in spiritual things, was a rule too vague for defining the limits of spiritual and temporal jurisdiction. The co-ordination, the equilibrium of the two powers was a relation with which neither party would be content. It was a struggle on both sides for universal monarchy. The popes, by strategy and shrewd diplomacy, gained complete supremacy over Western Europe, and for many years the pope was everywhere acknowledged head of the Latin Church. “It was during the progress of the struggle with the empire,” says Professor Fisher, “that the papal power may be said to have culminated. In the eighteen years (1198-1216) in which Innocent III reigned the papal institution shone forth in full splendor. The enforcement of celibacy had placed the entire body of the clergy in closer relation to the sovereign pontiff. The vicar of Peter had become the vicar of God and of Christ. The idea of a theocracy on earth, in which the pope should rule in this character, fully possessed the mind of Innocent, who united to the courage, pertinacity and lofty conceptions of Gregory VII a broader range of statesmanlike capacity. In his view the two swords of temporal and ecclesiastical power had both been given to Peter and to his successors, so that the earthly sovereign derived his prerogative from the head of the Church. The king was to the pope as the moon to the sun; a lower luminary shining with borrowed light. Acting on this theory, he assumed the post of arbiter in the contention of nations, and claimed the right to dethrone kings at his pleasure.” In the Church he assumed the character of universal bishop, under the theory that all episcopal power was originally deposited in Peter and his successors, and communicated through this source to bishops, who were thus only the vicars of the pope, and might be deposed at will. Being thus lifted up, he said: “Jesus Christ wills that the kingdom should be priestly, and the priesthood kingly. Over all he has set me as his vicar upon earth, so that as before Jesus ‘every knee shall bow,’ in like manner to his vicar all shall be obedient, and there shall be one fold and one shepherd.” Moreover, he applied to himself the words of Jesus, “All authority hath been given unto me in heaven and on earth.” And again, we