Arnold kept his course, however, and continued to launch his bolts, not against his diocesan, for to strike at one miter was not worth his while, but against that lordly hierarchy which, finding its center on the Seven Hills, had stretched its circumference to the extremities of Christendom. He demanded nothing less than that this hierarchy, which had crowned itself with temporal dignities, and which sustained itself by temporal arms, should retrace its steps, and become the lowly and purely spiritual institute it had been in the first century. It was not very likely to do so at the bidding of one man, however eloquent, but Arnold hoped to rouse the populations of Italy, and to bring such a pressure to bear upon the Vatican as would compel the chiefs of the Church to institute this most necessary and most just reform. Nor was he without the countenance of some persons of consequence. Maifredus, the Consul of Brescia, at the first supported his movement.
The bishop, deeming it hopeless to contend against Arnold on the spot, in the midst of his numerous followers, complained of him to the Pope. Innocent II. convoked a General Council in the Vatican, and summoned Arnold to Rome. The summons was obeyed. The crime of the monk was of all others the most heinous in the eyes of the hierarchy. He had attacked the authority, riches, and pleasures of the priesthood; but other pretexts must be found on which to condemn him. "Besides this, it was said of him that he was unsound in his judgment about the Sacrament of the altar and infant baptism." "We find that St. Bernard sending to Pope Innocent II. a catalogue of the errors of Abelardus," whose scholar Arnold had been, "accuseth him of teaching, concerning the Eucharist, that the accidents existed in the air, but not without a subject; and that when a rat doth eat the Sacrament, God withdraweth whither He pleaseth, and preserves where He pleases the body of Jesus Christ." The sum of this is that Arnold rejected transubstantiation, and did not believe in baptismal regeneration; and on these grounds the Council found it convenient to rest their sentence, condemning him to perpetual silence.
Arnold now retired from Italy, and, passing the Alps, "he settled himself," Otho tells us, "in a place of Germany called Turego, or Zurich, belonging to the diocese of Constance, where he continued to disseminate his doctrine," the seeds of which, it may be presumed, continued to vegetate until the times of Zwingle.
Hearing that Innocent II. was dead, Arnold returned to Rome in the beginning of the Pontificate of Eugenius III. (1144-45). One feels surprise, bordering on astonishment, to see a man with the condemnation of a Pope and Council resting on his head, deliberately marching in at the gates of Rome, and throwing down the gage of battle to the Vatican — "the desperate measure," as Gibbon calls it, "of erecting his standard in Rome itself, in the face of the successor of St. Peter." But the action was not so desperate as it looks. The Italy of those days was perhaps the least Papal of all the countries of Europe. "The Italians," says M'Crie, "could not, indeed, be said to feel at this period" (the fifteenth century, but the remark is equally applicable to the twelfth) "a superstitious devotion to the See of Rome. This did not originally form a discriminating feature of their national character; it was superinduced, and the formation of it can be distinctly traced to causes which produced their full effect subsequently to the era of the Reformation. The republics of Italy in the Middle Ages gave many proofs of religious independence, and singly braved the menaces and excommunications of the Vatican at a time when all Europe trembled at the sound of its thunder." In truth, nowhere were sedition and tumult more common than at the gates of the Vatican; in no city did rebellion so often break out as in Rome, and no rulers were so frequently chased ignominiously from their capital as the Popes.
Arnold, in fact, found Rome on entering it in revolt. He strove to direct the agitation into a wholesome channel. He essayed, if it were possible, to revive from its ashes the flame of ancient liberty, and to restore, by cleansing it from its many corruptions, the bright form of primitive Christianity. With an eloquence worthy of the times he spoke of, he dwelt on the achievements of the heroes and patriots of classic ages, the sufferings of the first Christian martyrs, and the humble and holy lives of the first Christian bishops. Might it not be possible to bring back those glorious times? He called on the Romans to arise and unite with him in an attempt to do so. Let us drive out the buyers and sellers who have entered the Temple, let us separate between the spiritual and the temporal jurisdiction, let us give to the Pope the things of the Pope, the government of the Church even, and let us give to the emperor the things of the emperor — namely, the government of the State; let us relieve the clergy from the wealth that burdens them, and the dignities that disfigure them, and with the simplicity and virtue of former times will return the lofty characters and the heroic deeds that gave to those times their renown. Rome will become once more the capital of the world. "He propounded to the multitude," says Bishop Otho, "the examples of the ancient Romans, who by the maturity of their senators' counsels, and the valor and integrity of their youth, made the whole world their own. Wherefore he persuaded them to rebuild the Capitol, to restore the dignity of the senate, to reform the order of knights. He maintained that nothing of the government of the city did belong to the Pope, who ought to content himself only with his ecclesiastical." Thus did the monk of Brescia raise the cry for separation of the spiritual from the temporal at the very foot of the Vatican.
For about ten years (1145-55) Arnold continued to prosecute his mission in Rome. The city all that time may be said to have been in a state of insurrection. The Pontifical chair was repeatedly emptied. The Popes of that era were short-lived; their reigns were full of tumult, and their lives of care. Seldom did they reside at Rome; more frequently they lived at Viterbo, or retired to a foreign country; and when they did venture within the walls of their capital, they entrusted the safety of their persons rather to the gates and bars of their stronghold of St. Angelo than to the loyalty of their subjects. The influence of Arnold meanwhile was great, his party numerous, and had there been virtue enough among the Romans they might during these ten favorable years, when Rome was, so to speak, in their hands, have founded a movement which would have had important results for the cause of liberty and the Gospel. But Arnold strove in vain to recall a spirit that was fled for centuries. Rome was a sepulcher. Her citizens could be stirred into tumult, not awakened into life.
The opportunity passed. And then came Adrian IV., Nicholas Breakspear, the only Englishman who ever ascended the throne of the Vatican. Adrian addressed himself with rigor to quell the tempests which for ten years had warred around the Papal chair. He smote the Romans with interdict. They were vanquished by the ghostly terror. They banished Arnold, and the portals of the churches, to them the gates of heaven, were re-opened to the penitent citizens. But the exile of Arnold did not suffice to appease the anger of Adrian. The Pontiff bargained with Frederic Barbarossa, who was then soliciting from the Pope coronation as emperor, that the monk should be given up. Arnold was seized, sent to Rome under a strong escort, and burned alive. We are able to infer that his followers in Rome were numerous to the last, from the reason given for the order to throw his ashes into the Tiber, "to prevent the foolish rabble from expressing any veneration for his body."
Arnold had been burned to ashes, but the movement he had inaugurated was not extinguished by his martyrdom. The men of his times had condemned his cause; it was destined, nevertheless, seven centuries afterwards, to receive the favorable and all but unanimous verdict of Europe. Every succeeding Reformer and patriot took up his cry for a separation between the spiritual and temporal, seeing in the union of the two in the Roman princedom one cause of the corruption and tyranny which afflicted both Church and State. Wicliffe made this demand in the fourteenth century; Savonarola in the fifteenth; and the Reformers in the sixteenth. Political men in the following centuries reiterated and proclaimed, with ever-growing emphasis, the doctrine of Arnold. At last, on the 20th of September, 1870, it obtained its crowning victory. On that day the Italians entered Rome, the temporal sovereignty of the Pope came to an end, the scepter was disjoined from the miter, and the movement celebrated its triumph on the same spot where its first champion had been burned.