So complete, apparently, was this adjustment of all the forces of European society that the great outbreak of the Lutheran reform movement was a complete surprise and an incredible shock to all established institutions. The historian can, indeed, trace with perfect continuity the lines of development which centre in that wonderful movement, when a monk, in an obscure town in the remote north of Germany, drew the eyes of all Europe to himself by gathering up into one passionate expression the long-suppressed protest against the tyranny of the dominant church system. But, on the surface of things, in the year 1517, there was little to point to this historic continuity. To all appearance the great impulse of Wiclif in England had died out with the suppression of open Lollardry just a hundred years before. John Hus, the spiritual heir of Wiclif, had been sacrificed at Constance in 1415 to a combination of forces, some of which were to prove themselves in reality the stoutest allies of the ideas he represented. True, the fires at Constance had kindled a flame in Bohemia, which defied all efforts of pope and emperor to put it out until dissensions within the party of revolt scattered and quenched the material on which it fed. But after the Council at Basel (1431-1443) the great readjustment carried Bohemia, too, along into the general scheme of conciliation. At that moment a party, henceforth to be known as the party of enlightenment, seized upon the papacy, and with Thomas Parentucelli (Nicholas V., 1447-1455) began that series of humanistic popes, Æneas Sylvius Piccolomini (Pius II., 1458-1464), Giuliano delle Rovere (Julius II., 1503-1513), and Giovanni de' Medici (Leo X., 1513-1521), who were ready to sacrifice all other interests to the aggrandisement of their personal power and the advancement of a higher cultivation and refinement of life.

It must be said that in the things men cared most about in the two generations before the year 1517, the government of the Church was such as suited the peoples of Europe. It was an easy-going system. It did not call for any application of the new spirit of inquiry to the prevailing institutions in Church and State. It was not insisting upon any too rigid morality either in the clergy or in the laity. Nor, on the other hand, was it overzealous in pressing its own claims too far. There is a grim sense of humour in the attitude of the Church towards its own institutions, so long as their existence was not threatened and no diminution of revenue was in sight. All the system asked was to be let alone. The Church knew that many of its claims had come to be absurd. Nowhere was this so well understood as in Italy and above all at Rome. So frank a "heathen" as Leo X. was not likely to insist too eagerly upon ideas or practices which he knew to be mere superstitions of the vulgar—not likely, that is, to press these matters until they were attacked.

If, on the other hand, they should be attacked, would this papacy be thorough-going enough in its enlightenment and its indifference to let them go, or would it rally to their defence all the forces of reaction? That was the problem of the Reformation period. If one approaches it from the side of enlightenment, one is at once impressed with the vast opportunity opened to the papacy. It had already adjusted itself to so many changes, it had so often found ways of taking the sting out of ideas and movements which seemed to threaten its very life, that sanguine men, like Erasmus, might well feel encouraged to hope that it would once more rise to the occasion. The world of Europe was filled with friendly criticism of its forms and methods; but as yet there had been few voices raised against its existence.

Dante, in his treatise on a single government for the world (de Monarchia), still clings to the mediæval conception of a twin administration of Christendom, only with the religious side distinctly subordinated to the temporal. Even Wiclif and Hus had been led to defy the papacy only by the logic of events; hostility to a papal organisation of church life was not an essential part of their original programme. Even Marsiglio of Padua had reserved to the papacy a wide sphere of activity, limited only by constitutional rights of governments and peoples. The literature of the conciliar period, covering the first half of the fifteenth century, does not succeed in casting off the spell of the papal idea, but aims to check and control its dangers to the public welfare. A constitutional papacy was the ideal of that time, not a Church without a papacy. All these attacks the mediæval system had met with amazing success. It had dealt its blows sparingly, but with great effect. Where its enemies had been backed up by powerful interests, as was Wiclif in England, it had seemed to fail and had bided its time. Where it could itself combine with other interests against them, as against Hus at Constance, it had hit hard and with precision.

It may be said with some certainty that if the papacy of the second half of the fifteenth century had been inclined to meet criticism half-way, criticism would not have turned into hostility. As one looks over the field of European society and politics in the two generations before 1517 one fails to find anything that can be called an anti-Roman "party." By "party" we mean here a nucleus of organisation with a programme or "platform" of its own towards the accomplishment of which it bends its chief efforts. In that sense, there was no party in Christendom which aimed at the overthrow of the papal system.

On the other hand it might be said that there was no great public interest in Europe which was not more or less directly threatened by the papacy and likely, therefore, at any inopportune moment, by some slip in the papal policy or even by the mere insistence of the papacy upon some point it could not give up, to be turned from apparent friendliness to open opposition. First among these public interests was the principle of nationality. The papacy had, as we have seen, apparently adjusted itself to this opposition, but this adjustment was obviously unstable. How great a strain would it bear? To what lengths of concession could the papacy afford to go in recognising the right of kings to manage the affairs of their kingdoms without interference? Were there questions of religion, or of public morals so obviously beyond the sphere of temporal control, that any conceivable papacy must cling to the right of final judgment in them or go to the wall? When in the year 1341 the Emperor Ludwig the Bavarian, had claimed for himself the divine right to declare a certain princess divorced from an inconvenient husband, that he might marry her to his son and bring her dowry to increase the Bavarian estates, there was an almost universal cry of horror at this assault upon a sacred prerogative of the Church. How would it be now, two hundred years later, if a king, let us say of England, should find it convenient to divorce a wife and marry another for no reason but that he willed it so? Could the papacy afford to pay the price of acquiescence, or could it better afford to lose for ever the allegiance of England? That was the kind of question presented to the papacy from the side of the national states.

So again from the point of view of the advancing thought of the day;—how far could the papacy safely go in meeting this advance? Men were moving on step by step from one audacious thought to another, until it was beginning to seem as if there were no limit to the speculation of this awakened human spirit. The Church had grown great upon a system of thought in which the institution, the established order, the class, the tradition, had been everything, and the individual had been nothing. It had been a man's first duty, not to have ideas of his own, but to take those which were offered to him by the highest prevailing authority. So far all opposition to this method of thought had been effectually silenced. John Hus had declared that the essence of the Church lay in its being the assembly of believers acknowledging Christ alone as its head. Hus had been disposed of, and again the papacy had risen triumphant. The same men who had pressed most eagerly the condemnation of Hus were at that moment aiding his cause by putting forward a theory of church life which thrust the papacy into the background and would have brought into its place a legislature of national churches as the true expression of the will of Western Christendom. That opposition too had been overcome.

But now a more subtle development of individualism was beginning to make itself felt. The Church had thus far succeeded in keeping itself before the world as the one sole and sufficient medium of salvation for sinful man. It had developed a vast and imposing system of mediation between man and God by its priesthood, its ceremonies, its philosophy of morals, and its elaborately conducted methods of bookkeeping with the consciences of the faithful. Indeed, so elaborate had this soul-saving machinery become that the wear and tear of it threatened the durability of its parts. An immense proportion of its energy had to be devoted to keeping the system going. What now would happen if somehow it should be made clear to the Christian conscience that there was a shorter way to salvation, a more direct, a less expensive, and, more than all, a better-established way? How far would the Church dare to carry its policy of going half way toward such an idea as that?

The test upon this point came in the revival of all that group of notions which, for lack of a better term, we express by the word "Augustinianism." Setting aside all refinements of theology for the moment, the word Augustinian represents to us the conception of the individual human soul as a sinful thing, thrown out in all its nakedness and isolation upon an angry sea of retribution, from which nothing can save it but the arbitrary action of the grace of God. Here was individualism indeed! We have seen how the Church had got on with the æsthetic individualism of the Renaissance—with its sham heathenism, its theatrical exploiting of antiquity to justify a license which affronted all true Christian self-respect, and yet, after all, its readiness to conform itself to all existing forms of social and religious organisation. From such individualism as this the Church had little direct injury to fear. It laughed with it and at it and used it for its purposes. Poggio Bracciolini, the most foul-mouthed blackguard of the second generation of Italian Humanists, spent his life as papal secretary without fear and without reproach.

Strange collocation of ideas, that the same impulse which drove these unchecked scoffers into an æsthetic defiance of literary tradition should have forced Luther and Calvin into a death-struggle with the whole existing church order! The Church had tolerated the individualism of taste; how far could it tolerate the individualism of the soul? The one had declared that the salvation of the human mind was to be found by going back to the unfailing sources of culture in the Greek and Latin classics. The other was to declare that the only salvation of the soul was to be found by overleaping all the vast accumulation of forms and traditions of the past thousand years and going straight back to the early proclamations of the divine grace through faith in Christ alone.