The Opus Majus deals among other things with experimental science, and in the introductory chapter to the sixth part Bacon stated the theory of inductive thought quite as lucidly as did Francis Bacon three and a half centuries later in the Novum Organum. [Footnote: Positis radicibus sapientiae Latinorum penes Linguas et Mathematicam et Perspectivam, nunc volo revolvere radices a parte Scientiae Experimentalis, quia sine experientia nihil sufficienter scire protest. Duo enim simt modi cognoscendi, scilicet per argumentum et experimentum. Argumentum concludit et facit nos concedere conclusionem, sed non certificat neque removet dubitationem ut quiescat animus in intuitu veritatis, nisi eam inveniat via experientiae; quia multi habent argumenta ad scibilia, sed quia non habent experientiam, negligunt ea, nee vitant nociva nex persequuntue bona. J. H. Bridges, The Opus Majus of Roger Bacon (Oxford, 1897), II, 167.]

Clement died in 1268. The papacy remained vacant for a couple of years, but in 1271 Gregory X came in on a conservative reaction. Bacon passed most of the rest of his life in prison, perhaps through his own ungovernable temper, and ostensibly his writings seem to have had little or no effect on his contemporaries, yet it is certain that he was not an isolated specimen of a type of intelligence which suddenly bloomed during the Reformation. Bacon constantly spoke of his friends, but his friends evidently did not share his temperament. The scientific man has seldom relished martyrdom, and Galileo’s experience as late as 1633 shows what risks men of science ran who even indirectly attacked the vested interests of the Church. After the middle of the thirteenth century the danger was real enough to account for any degree of secretiveness, and a striking case of this timidity is related by Bacon himself. No one knows even the name of the man to whom Bacon referred as “Master Peter,” but according to Bacon, “Master Peter” was the greatest and most original genius of the age, only he shunned publicity. The “Dominus experimentorum,” as Bacon called him, lived in a safe retreat and devoted himself to mathematics, chemistry, and the mechanical arts with such success that, Bacon insisted, he could by his inventions have aided Saint Louis in his crusade more than his whole army. [Footnote: Émile Charles, Roger Bacon. Sa vie et ses ouvrages, 17.] Nor is this assertion altogether fantastic. Bacon understood the formula for gunpowder, and if Saint Louis had been provided with even a poor explosive he might have taken Cairo; not to speak of the terror which Greek fire always inspired. Saint Louis met his decisive defeat in a naval battle fought in 1250, for the command of the Nile, by which he drew supplies from Damietta, and he met it, according to Matthew Paris, because his ships could not withstand Greek fire. Gunpowder, even in a very simple form, might have changed the fate of the war.

Scepticism touching the value of relics as a means for controlling nature was an effect of experiment, and, logically enough, scepticism advanced fastest among certain ecclesiastics who dealt in relics. For example, in 1248 Saint Louis undertook to invade Egypt in defence of the cross. Possibly Saint Louis may have been affected by economic considerations also touching the eastern trade, but his ostensible object was a crusade. The risk was very great, the cost enormous, and the responsibility the king assumed of the most serious kind. Nothing that he could do was left undone to ensure success. In 1249 he captured Damietta, and then stood in need of every pound of money and of every man that Christendom could raise; yet at this crisis the Church thought chiefly of making what it could in cash out of the war, the inference being that the hierarchy suspected that even if Saint Louis prevailed and occupied Jerusalem, little would be gained from an ecclesiastical standpoint. At all events, Matthew Paris has left an account, in his chronicle of the year 1249, of how the pope and the Franciscans preached this crusade, which is one of the most suggestive passages in thirteenth-century literature:

“About the same time, by command of the pope, whom they obeyed implicitly, the Preacher and Minorite brethren diligently employed themselves in preaching; and to increase the devotion of the Christians, they went with great solemnity to the places where their preaching was previously indicated, and granted many days of indulgence to those who came to hear them.... Preaching on behalf of the cross, they bestowed that symbol on people of every age, sex and rank, whatever their property or worth, and even on sick men and women, and those who were deprived of strength by sickness or old age; and on the next day, or even directly afterwards, receiving it back from them, they absolved them from their vow of pilgrimage, for whatever sum they could obtain for the favour. What seemed unsuitable and absurd was, that not many days afterwards, Earl Richard collected all this money in his treasury, by the agency of Master Bernard, an Italian clerk, who gathered in the fruit; whereby no slight scandal arose in the Church of God, and amongst the people in general, and the devotion of the faithful evidently cooled.” [Footnote: Matthew Paris, English History, translated by the Rev. J. A, Giles, II, 309.]

When the unfortunate Baldwin II became Emperor of the East in 1237, the relics of the passion were his best asset. In 1238, while Baldwin was in France trying to obtain aid, the French barons who carried on the government at Constantinople in his absence were obliged to pledge the crown of thorns to an Italian syndicate for 13,134 perpera, which Gibbon conjectures to have been besants. Baldwin was notified of the pledge and urged to arrange for its redemption. He met with no difficulty. He confidently addressed himself to Saint Louis and Queen Blanche, and “Although the king felt keen displeasure at the deplorable condition of Constantinople, he was well pleased, nevertheless, with the opportunity of adorning France with the richest and most precious treasure in all Christendom.” More especially with “a relic, and a sacred object which was not on the commercial market.” [Footnote: Du Cange, Histoire de L’empire de Constantinople sous les empereurs Français, edition de Buchon, I, 259.]

Louis, beside paying the loan and the cost of transportation which came to two thousand French pounds (the mark being then coined into £2, 15 sous and 6 pence), made Baldwin a present of ten thousand pounds for acting as broker. Baldwin was so well contented with this sale which he closed in 1239, that a couple of years later he sent to Paris all the contents of his private chapel which had any value. Part of the treasure was a fragment of what purported to be the cross, but the authenticity of this relic was doubtful; there was beside, however, the baby linen, the spear-head, the sponge, and the chain, beside several miscellaneous articles like the rod of Moses.

Louis built the Sainte Chapelle at a cost of twenty thousand marks as a shrine in which to deposit them. The Sainte Chapelle has usually ranked as the most absolutely perfect specimen of mediaeval religious architecture. [Footnote: On this whole subject of the inter-relation of mediæval theology with architecture and philosophy the reader is referred to Mont-Saint-Michel et Chartres, by Henry Adams, which is the most philosophical and thorough exposition of this subject which ever has been attempted.]

When Saint Louis bought the Crown of Thorns from Baldwin in 1239, the commercial value of relics may, possibly, be said to have touched its highest point, but, in fact, the adoration of them had culminated with the collapse of the Second Crusade, and in another century and a half the market had decisively broken and the Reformation had already begun, with the advent of Wycliffe and the outbreak of Wat Tyler’s Rebellion in 1381. For these social movements have always a common cause and reach a predetermined result.

In the eleventh century the convent of Cluny, for example, had an enormous and a perfectly justified hold upon the popular imagination, because of the sanctity and unselfishness of its abbots. Saint Hugh won his sainthood by a self-denial and effort which were impossible to ordinary men, but with Louis IX the penitential life had already lost its attractions and men like Arnold rapidly brought religion and religious thought into contempt. The famous Grosseteste, Bishop of Lincoln, born, probably, in 1175, died in 1253. He presided over the diocese of Lincoln at the precise moment when Saint Louis was building the Sainte Chapelle, but Grosseteste in 1250 denounced in a sermon at Lyons the scandals of the papal court with a ferocity which hardly was surpassed at any later day.

To attempt even an abstract of the thought of the English Reformation would lead too far, however fascinating the subject might be. It must suffice to say briefly that theology had little or nothing to do with it. Wycliffe denounced the friars as lazy, profligate impostors, who wrung money from the poor which they afterwards squandered in ways offensive to God, and he would have stultified himself had he admitted, in the same breath, that these reprobates, when united, formed a divinely illuminated corporation, each member of which could and did work innumerable miracles through the interposition of Christ. Ordinary miracles, indeed, could be tested by the senses, but the essence of transubstantiation was that it eluded the senses. Thus nothing could be more convenient to the government than to make this invisible and intangible necromancy a test in capital cases for heresy-Hence Wycliffe had no alternative but to deny transubstantiation, for nothing could be more insulting to the intelligence than to adore a morsel of bread which a priest held in his hand. The pretension of the priests to make the flesh of Christ was, according to Wycliffe, an impudent fraud, and their pretension to possess this power was only an excuse by which they enforced their claim to collect fees, and what amounted to extortionate taxes, from the people. [Footnote: Nowhere, perhaps, does Wycliffe express himself more strongly on this subject than in a little tract called The Wicket, written in English, which he issued for popular consumption about this time.] But, in the main, no dogma, however incomprehensible, ever troubled Protestants, as a class. They easily accepted the Trinity, the double procession, or the Holy Ghost itself, though no one had the slightest notion what the Holy Ghost might be. Wycliffe roundly declared in the first paragraph of his confession [Footnote: Fasciculi Zizaniorum, 115.] that the body of Christ which was crucified was truly and really in the consecrated host, and Huss, who inherited the Wycliffian tradition, answered before the Council of Constance, “Verily, I do think that the body of Christ is really and totally in the sacrament of the altar, which was born of the Virgin Mary, suffered, died, and rose again, and sitteth on the right hand of God the Father Almighty.” [Footnote: Foxe, Acts and Monuments, III, 452.] That which has rent society in twain and has caused blood to flow like water, has never been abstract opinions, but that economic competition either between states or classes, that lust for power and wealth, which makes a vested interest. Thus by 1382 the eucharist had come to represent to the privileged classes power and wealth, and they would have repudiated Wycliffe even had they felt strong enough to support him. But they were threatened by an adversary equally formidable with heresy in the person of the villeins whom the constantly increasing momentum of the time had raised into a position in which they undertook to compete for the ownership of the land which they still tilled as technical serfs.