II.--The Western Empire and Theocracy
Charlemagne, the first emperor of the restored or Holy Roman Empire, by his conquests brought into a single dominion practically all Western Europe from the Elbe and the Danube to the Ebro. He stood the champion and the head of Western Christendom, palpably the master, and not even in theory the subordinate, of the Pontiff from whom he received the imperial crown. But he established ecclesiastics as a territorial nobility, counteracting the feudal nobility; and when the mighty emperor was gone, and the unity of what was nominally one empire passed away, this ecclesiastical nobility became an instrument for the elevation of the spiritual above the temporal head of Christendom. The change was already taking place under his son Louis the Pious, whose character facilitated it.
The disintegration of the empire was followed by a hideous degradation of the papacy. But the Saxon line of emperors, the Ottos, sprung from Henry the Fowler, once more revived the empire; the third of them established a worthy pope in Silvester II. But both emperor and pope died just after the eleventh century opened. Elections of popes and anti-popes continued to be accompanied by the gravest scandals, until the Emperor Henry III. (Franconian dynasty) set a succession of Germans on the papal throne.
The high character of the pontificate was revived in the persons of Leo IX. and Victor II. (Gebhard of Eichstadt); many abuses were put down or at least checked with a firm hand. But Henry's death weakened the empire, and Stephen IX. added to the rigid enforcement of orthodoxy more peremptory claims for the supremacy of the Holy See. His successor, Nicholas II., strengthened the position as against the empire by securing the support of the fleshly arm--the Normans. His election was an assertion of the right of the cardinals to make their own choice. Alexander II. was chosen in disregard of the Germans and the empire, and the Germans chose an anti-pope. At the back of the Italian papal party was the great Hildebrand. In 1073 Hildebrand himself ascended the papal throne as Gregory VII. With Hildebrand, the great struggle for supremacy between the empire and the papacy was decisively opened.
Gregory's aim was to establish a theocracy through an organised dominant priesthood separated from the world, but no less powerful than the secular forces; with the pope, God's mouthpiece, and vice-regent, at its head. The temporal powers were to be instruments in his hand, subject to his supreme authority. Clerical celibacy acquired a political value; the clergy would concentrate on the glory of the Church those ambitions which made laymen seek to aggrandise their families.
The collision between Rome and the emperor came quickly. The victory at the outset fell to the pope, and Henry IV. was compelled to humble himself and entreat pardon as a penitent at Canossa. Superficially, the tables were turned later; when Gregory died, Henry was ostensibly victor.
But Gregory's successor, Urban, as resolute and more subtle, retrieved what had only been a check. The Crusades, essentially of ecclesiastical inspiration, were given their great impulse by him; they were a movement of Christendom against the Paynim, of the Church against Islam; they centred in the pope, not the emperor, and they made the pope, not the emperor, conspicuously the head of Christendom.
The twelfth century was the age of the Crusades, of Anselm and Abelard, of Bernard of Clairvaux, and Arnold of Brescia. It saw the settlement of the question of investitures, and in England the struggle between Henry II. and Becket, in which the murder of the archbishop gave him the victory. It saw a new enthusiasm of monasticism, not originated by, but centring in, the person of Bernard, a more conspicuous and a more authoritative figure than any pope of the time. To him was due the suppression of the intellectual movement from within against the authority of the Church, connected with Abelard's name.
Arnold of Brescia's movement was orthodox, but, would have transformed the Church from a monarchial into a republican organisation, and demanded that the clergy should devote themselves to apostolical and pastoral functions with corresponding habits of life. He was a forerunner of the school of reformers which culminated in Zwingli.
In the middle of the century the one English pope, Hadrian IV., was a courageous and capable occupant of the papal throne, and upheld its dignity against Frederick Barbarossa; though he could not maintain the claim that the empire was held as a fief of the papacy. But the strife between the spiritual and temporal powers issued on his death in a double election, and an imperial anti-pope divided the allegiance of Christendom with Alexander III. It was not till after Frederick had been well beaten by the Lombard League at Legnano that emperor and pope were reconciled, and the reconciliation was the pope's victory.