The Inquisition too was now greatly enfeebled throughout central and northern as well as southern Italy. In 1440 the materialist, mathematician, and astrologer Amadeo de’ Landi, of Milan, was accused of heresy by the orthodox Franciscans. Not only was he acquitted, but his chief accuser was condemned in turn to make public retractation, which he however declined to do.[20] Fifty years later the Inquisition was still nearly powerless. In 1497 we find a freethinking physician at Bologna, Gabriele de Salò, protected by his patrons against its wrath, although he “was in the habit of maintaining that Christ was not God, but the son of Joseph and Mary ...; that by his cunning he had deceived the world; that he may have died on the cross on account of crimes which he had committed,”[21] and so forth. Nineteen years before, Galeotto Marcio had come near being burned for writing that any man who lived uprightly according to his own conscience would go to heaven, whatever his faith; and it needed the Pope, Sixtus IV, his former pupil, to save him from the Inquisition.[22] Others, who went further, ran similar risks; and in 1500 Giorgio da Novara was burned at Bologna, presumptively for denying the divinity of Jesus.[23] A bishop of Aranda, however, is said to have done the same with impunity, in the same year,[24] besides rejecting hell and purgatory, and denouncing indulgences as a device of the popes to fill their pockets.
During this period too the philosophy of Averroës, as set forth in his “Great Commentary” on Aristotle, was taught in North Italy with an outspokenness not before known. Gaetano of Siena began to lecture on the Commentary at Padua in 1436; it was in part printed there in 1472; and from 1471 to 1499 Nicoletto Vernias seems to have taught, in the Paduan chair of philosophy, the Averroïst doctrine of the world-soul, thus virtually denying the Christian doctrine of immortality. Violent opposition was raised when his pupil Niphus (Nifo) printed similar doctrine in a treatise De Intellectu et Dæmonibus (1492); but the professors when necessary disclaimed the more dangerous tenets of Averroïsm.[25] Nifo it was who put into print the maxim of his tribe: Loquendum est ut plures, sententiendum ut pauci—“think with the few; speak with the majority.”[26]
As in ancient Greece, humorous blasphemy seems to have fared better than serious unbelief.[27] As is remarked by Hallam, the number of vindications of Christianity produced in Italy in the fifteenth century proves the existence of much unbelief;[28] and it is clear that, apart from academic doubt, there was abundant freethinking among men of the world.[29] Erasmus was astonished at the unbelief he found in high quarters in Rome. One ecclesiastic undertook to prove to him from Pliny that there is no future state; others openly derided Christ and the apostles; and many avowed to him that they had heard eminent papal functionaries blaspheming the Mass.[30] The biographer of Pope Paul II has recorded how that pontiff found in his own court, among certain young men, the opinion that faith rested rather on trickeries of the saints (sanctorum astutiis) than on evidence; which opinion the Pope eradicated.[31] But in the career of Perugino (1446–1524), who from being a sincerely religious painter became a skeptic in his wrath against the Church which slew Savonarola,[32] we have evidence of a movement of things which no papal fiat could arrest.
As to the beliefs of the great artists in general we have little information. Employed as they so often were in painting religious subjects for the churches, they must as a rule have conformed outwardly; and the artistic temper is more commonly credent than skeptical. But in the case of one of the greatest, Leonardo da Vinci (1452–1519), we have evidence of a continual play of critical scrutiny on the world, and a continual revolt against mere authority, which seem incompatible with any acceptance of Christian dogma. In his many notes, unpublished till modern times, his universal genius plays so freely upon so many problems that he cannot be supposed to have ignored those of religion. His stern appraisement of the mass of men[33] carries with it no evangelical qualifications; his passion for knowledge is not Christian;[34] and his reiterated rejection of the principle of authority in science[35] and in literature[36] tells of a spirit which, howsoever it might practise reticence, cannot have been inwardly docile to either priesthood or tradition. In all his reflections upon philosophic and scientific themes he is, in the scientific sense, materialistic—that is, inductive, studious of experiment, insistent upon tangible data.[37] “Wisdom is daughter of experience”;[38] “truth is the daughter of time”;[39] “there is no effect in Nature without a reason”;[40] “all our knowledge originates in sensations”[41]—such are the dicta he accumulates in an age of superstition heightened by the mutability of life, of ecclesiastical tyranny tempered only by indifferentism, of faith in astrology and amulets, of benumbing tradition in science and philosophy. On the problem of the phenomena of fossil shells he pronounces with a searching sagacity of inference[42] that seems to reveal at once the extent to which the advance of science has been blocked by pious obscurantism.[43] In all directions we see the great artist, a century before Bacon, anticipating Bacon’s protests and questionings, and this with no such primary bias to religion as Bacon had acquired at his mother’s knee. When he turns to the problems of body and spirit he is as dispassionate, as keenly speculative, as over those of external nature.[44] Of magic he is entirely contemptuous, not in the least on religious grounds, though he glances at these, but simply for the folly of it.[45] All that tells of religious feeling in him is summed up in a few utterances expressive of a vague theism;[46] while he has straight thrusts at religious fraud and absurdity.[47] It is indeed improbable that a mind so necessitated to discourse of its thought, however gifted for prudent silence, can have subsisted without private sympathy from kindred souls. Skepticism was admittedly abundant; and Leonardo of all men can least have failed to reckon with its motives.
Perhaps the most fashionable form of quasi-freethinking in the Italy of the fifteenth century was that which prevailed in the Platonic Academy of Florence in the period, though the chief founder of the Academy, Marsilio Ficino, wrote a defence of Christianity, and his most famous adherent, Giovanni Pico della Mirandola, planned another. Renaissance Platonism began with the Greek Georgios Gemistos, surnamed Plethon because of his devotion to Plato, which was such as to scandalize common Christians and exasperate Aristotelians. The former had the real grievance that his system ostensibly embodied polytheism and logically involved pantheism;[48] and one of his antagonists, Gennadios Georgios Scolarios, who became patriarch of Constantinople, caused his book On Laws to be burned;[49] but the allegation of his Aristotelian enemy and countryman, Georgios Trapezuntios, that he prayed to the sun as creator of the world,[50] is only one of the polemical amenities of the period. Ostensibly he was a believing Christian, stretching Christian love to accommodate the beliefs of Plato; but it was not zeal for orthodoxy that moved Cosimo dei Medici, at Florence, to embrace the new Platonism, and train up Marsilio Ficino to be its prophet. The furor allegoricus which inspired the whole school[51] was much more akin to ancient Gnosticism than to orthodox Christianity, and constantly points to pantheism[52] as the one philosophic solution of its ostensible polytheism. When, too, Ficino undertakes to vindicate Christianity against the unbelievers in his Della Religione Cristiana, “the most solid arguments that he can find in its favour are the answers of the Sibyls, and the prophecies of the coming of Jesus Christ to be found in Virgil, Plato, Plotinus, and Porphyry.”[53]
How far such a spirit of expatiation and speculation, however visionary and confused, tended to foster heresy is seen in the brief career of the once famous young Pico della Mirandola, Ficino’s wealthy pupil. Parading a portentous knowledge of tongues[54] and topics at the age of twenty-four, he undertook (1486) to maintain a list of nine hundred Conclusiones or propositions at Rome against all comers, and to pay their expenses. Though he had obtained the permission of the Pope, Innocent VIII, the challenge speedily elicited angry charges of heresy against certain of the theses, and the Pope had to stop the proceedings and issue an ecclesiastical commission of inquiry. Some of the propositions were certainly ill adjusted to Catholic ideas, in particular the sayings that “neither the cross of Christ nor any image is to be adored adoratione latriæ”—with worship; that no one believes what he believes merely because he wishes to; and that Jesus did not physically descend into hell.[55] Pico, retiring to Florence, defended himself in an Apologia, which provoked fresh outcry; whereupon he was summoned to proceed to Rome; and though the powerful friendship of Lorenzo dei Medici procured a countermand of the order, it was not till 1496 that he received, from Alexander VI, a full papal remission.
Among the unachieved projects of his later life, which ended at the age of thirty-one, was that of a treatise Adversus Hostes Ecclesiæ, to be divided into seven sections, the first dealing with “The avowed and open enemies of Christianity,” and the second with “Atheists and those who reject every religious system upon their own reasoning”; and the others with Jews, Moslems, idolaters, heretics, and unrighteous believers.[56] The vogue of unbelief thus signified was probably increased by the whole speculative habit of Pico’s own school,[57] which tended only less than Averroïsm to a pantheism subversive of the Christian creed. It is noteworthy that, while Ficino believed devoutly in astrology,[58] Pico rejected it, and left among his confused papers a treatise against it which his nephew contrived to transcribe and publish;[59] but it does not appear that this served either the cause of religion or that of science. The educated Italian world, while political independence lasted, remained in various degrees freethinking, pantheistic, and given to astrology, no school or teacher combining rationalism in philosophy with sound scientific methods.
One of the great literary figures of the later Renaissance, Niccolò Machiavelli (1469–1527), is the standing proof of the divorce of the higher intelligence of Italy from the faith as well as the cause of the Church before the Reformation. With this divorce he expressly charges the Church itself, giving as the first proof of its malfeasance that the peoples nearest Rome were the least religious.[60] To him the Church was the supreme evil in Italian politics,[61] the “stone in the wound.” In a famous passage he gives his opinion that “our religion, having shown us the truth and the true way, makes us esteem less political honour (l’onore del mondo)”; and that whereas the pagan religion canonized only men crowned with public honour, as generals and statesmen, “our religion has glorified rather the humble and contemplative men than the active,” placing the highest good in humility and abjection, teaching rather to suffer than to do, and so making the world debile and ready to be a prey to scoundrels.[62] The passage which follows, putting the blame on men for thus misreading their religion, is a fair sample of the grave mockery with which the men of that age veiled their unfaith.[63] Machiavelli was reputed in his own world an atheist;[64] and he certainly was no religionist. He indeed never avows atheism, but neither did any other writer of the epoch;[65] and the whole tenour of his writings is that of a man who had at least put aside the belief in a prayer-answering deity;[66] though, with the intellectual arbitrariness which still affected all the thought of his age, he avows a belief that all great political changes are heralded by prodigies, celestial signs, prophecies, or revelations[67]—here conforming to the ordinary superstition of his troublous time.
It belongs, further, to the manifold self-contradiction of the Renaissance that, holding none of the orthodox religious beliefs, he argues insistently and at length for the value and importance of religion, however untrue, as a means to political strength. Through five successive chapters of his Discourses on Livy he presses and illustrates his thesis, praising Numa as a sagacious framer of useful fictions, and as setting up new and false beliefs which made for the unification and control of the Roman people. The argument evolved with such strange candour is, of course, of the nature of so much Renaissance science, an à priori error: there was no lack of religious faith and fear in primitive Rome before the age of Numa; and the legend concerning him is a product of the very primordial mythopoiesis which Machiavelli supposes him to have set on foot. It is in the spirit of that fallacious theory of a special superinduced religiosity in Romans[68] that the great Florentine proceeds to charge the Church with having made the Italians religionless and vicious (senza religione e cattivi). Had he lived a century or two later he might have seen in the case of zealously believing Spain a completer political and social prostration than had fallen in his day on Italy, and this alongside of regeneration in an unbelieving France. But indeed it was the bitterness of spirit of a suffering patriot looking back yearningly to an idealized Rome, rather than the insight of the author of The Prince,[69] that inspired his reasoning on the political uses of religion; for at the height of his exposition he notes, with his keen eye for fact, how the most strenuous use of religious motive had failed to support the Samnites against the cool courage of Romans led by a rationalizing general;[70] and he notes, too, with a sardonic touch of hopefulness, how Savonarola had contrived to persuade the people of contemporary Florence that he had intercourse with deity.[71] Italy then had faith enough and to spare.
Such argument, in any case, even if untouched by the irony which tinges Machiavelli’s, could never avail to restore faith; men cannot become believers on the motive of mere belief in the value of belief; and the total effect of Machiavelli’s manifold reasoning on human affairs, with its startling lucidity, its constant insistence on causation, its tacit negation of every notion of Providence, must have been, in Italy as elsewhere, rather to prepare the way for inductive science than to rehabilitate supernaturalism, even among those who assented to his theory of Roman development. In his hands the method of science begins to emerge, turned to the most difficult of its tasks, before Copernicus had applied it to the simpler problem of the motion of the solar system. After centuries in which the name of Aristotle had been constantly invoked to small scientific purpose, this man of the world, who knew little or nothing of Aristotle’s Politics,[72] exhibits the spirit of the true Aristotle for the first time in the history of Christendom; and it is in his land after two centuries of his influence that modern sociology begins its next great stride in the work of Vico.