Thee political scheme of Rienzi failed, but it started a movement in the world of thought deeper and more enduring than State transactions. For his ideas were adopted by the greatest writer then living, and were expounded by him in the most eloquent and gracious prose that had been heard for a thousand years. Petrarca called the appearance of the patriotic tribune and rhetorician the dawn of a new world and a golden age. Like him, he desired to purge the soil of Italy from the barbaric taint. It became the constant theme of the Humanists to protest against the foreign intruder, that is, against the feudal noble the essential type of the medieval policy. It is the link between Rienzi, the dreamer of dreams, and the followers of Petrarca. Bocaccio had already spoken of the acceptable blood of tyrants.

But the political influence of antiquity, visible at first, made way for a purely literary influence. The desire for good Latin became injurious to Italian, and Petrarca censured Dante for his error in composing the Divine Comedy in the vulgar tongue. He even regretted that the Decamerone was not written in Latin, and refused to read what his friend had written for the level of uneducated men. The classics became, in the first place, the model and the measure of style; and the root of the Renaissance was the persuasion that a man who could write like Cicero had an important advantage over a man who wrote like Bartolus or William of Ockham; and that ideas radiant with beauty must conquer ideas clouded over with dialectics. In this, there was an immediate success. Petrarca and his imitators learnt to write excellent Latin. Few of them had merit as original thinkers, and what they did for erudition was done all over again, and incomparably better, by the scholars who appeared after the tempest of the Reformation had gone down. But they were excellent letter writers. In hundreds of volumes, from Petrarca to Sadolet and Pole, we can trace every idea and mark every throb. It was the first time that the characters of men were exposed with analytic distinctness; the first time indeed that character could be examined with accuracy and certitude.

A new type of men began with Petrarca, men accustomed to introspection, who selected their own ideals, and moulded their minds to them. The medieval system could prepare him for death; but, seeing the vicissitudes of fortune and the difficulties of life, he depended on the intellectual treasures of the ancient world, on the whole mass of accessible wisdom, to develop him all round. To men ignorant of Greek, like the first generation of the Renaissance, the fourteenth-century men, much in ancient philosophy was obscure. But one system, that of the Stoics, they studied deeply, and understood, for they had the works of Seneca. For men craving for self-help and the complete training of the faculties, eager to escape from the fixed types of medieval manhood, minted by authority, and taught to distrust conscience, when it was their own, and to trust it only in others, Seneca was an oracle. For he is the classic of mental discipline, vigilant self-study, and the examination of conscience. It is under these influences that the modern type of individual man took shape. The action of religion, by reason of the divided Church, and the hierarchy in partibus, was at a low point; and no age has been so corrupt, so barbarous in the midst of culture. The finished individual of the Renaissance, ready for emergencies equal to either fortune, relying on nothing inherited, but on his own energy and resource, began badly, little recking rights of others, little caring for the sanctity of life.

Very early in the first or Latin phase of the revival, people suspected that familiarity with the classics would lead to admiration for paganism. Coluccio Salutato, who had been Florentine Secretary from the time of Petrarca, and is a classical writer of Latin letters, had to defend the new learning against the rising reproach of irreligion; and the statue of Virgil was ignominiously removed from the market-place of the town which his birth has made illustrious, as a scandal to good men. Petrarca never became a Greek scholar. He felt the defect. To write beautiful Latin was nothing, unless there was more to say than men already knew. But the Latin classics were no new discovery. The material increase of knowledge was quite insufficient to complete the type of an accomplished man. The great reservoir of ideas, of forgotten sciences, of neglected truth, remained behind. Without that, men would continue to work at a disadvantage, to fight in the dark, and could never fulfil the possibilities of existence. What was impatiently felt as the medieval eclipse came not from the loss of elegant Latin, but from the loss of Greek. All that was implied in the intended resurrection of antiquity depended on the revival of Greek studies. Because Petrarca possessed the culture of his time beyond all men, he was before them all in feeling what it needed most. Knowledge of truth, not casual and partial, but as complete and certain as the remaining civilisation admitted, would have to be abandoned, if Latin was still to be the instrument and the limit. Then the new learning would not be strong enough to break down the reliance on approved authors, the tyranny of great names, the exclusiveness of schools. Neither rhetoric nor poetry could deprive Aristotle and Peter Lombard, St. Augustine and St. Thomas, of their supremacy, give them their position in the incessant stream of thought, or reduce them beneath the law of progress in the realm of knowledge.

The movement which Petrarca initiated implied the revival of a buried world, the enrichment of society by the mass of things which the western nations had allowed to drop, and of which medieval civilisation was deprived. It meant the preference for Grecian models, the supremacy of the schools of Athens, the inclusion of science in literature, the elevation of Hippocrates and Archimedes to a level with Terence and Quintilian, the reproduction of that Hellenic culture which fought the giant fight of the fourth and fifth century with the Councils and Fathers of the Church. That is why the Latin restoration, which was the direct result of Petrarca's example, was overwhelmed by the mightier change that followed, when a more perfect instrument reached the hands of men passionately curious and yearning for new things.

At first there was no way of acquiring the unknown tongue. But the second generation of Humanists sat at the feet of Byzantine masters. The first was Chrysoloras, who was sent to Italy on a political mission and settled in 1397 as a teacher of his own language at Florence. When he died, at the council of Constance, there were Italian scholars who could read Greek MSS. As teachers were scarce, adventurous men, such as Scarparia, Guarino, Aurispa, pursued their studies at Constantinople. Filelfo remained there for seven years, working in great libraries not yet profaned by the Turk. Before the middle of the fifteenth century Italy was peopled with migratory scholars, generally poor, and without fixed appointments, but able to rouse enthusiasm when they offered Plato for Henry of Ghent, and Thucydides for Vincent of Beauvais. By that time the superiority of the new learning, even in its very fragmentary condition, was irresistible.

Just then three events occurred which determined the triumph of the Renaissance. The Emperor came over to the Council of Florence with a number of bishops and divines. In the discussions that followed, Greek scholars were in demand; and one Eastern prelate, Bessarion, remained in Italy, became a cardinal, and did much for the study of Plato and the termination of the long Aristotelian reign. His fine collection of manuscripts was at the service of scholars, and is still at their service, in St. Mark's library at Venice. The fall of Constantinople drove several fugitives to seek a refuge in Italy, and some brought their books with them, which were more scarce and more needful than men. For by that time Greek studies were well established, and suffered only from the extreme scarcity of manuscripts. The third important event was the election of Parentucelli, who became Pope Nicholas V. On that day the new learning took possession of the Holy See, and Rome began to be considered the capital of the Renaissance.

It was not in the nature of things that this should be. For the new men, with their new instrument of intellectual power, invaded territory which was occupied by the clergy. In the Middle Ages the Church, that is to say, first the cloister, then the universities founded under the protectorate of the Church, had the civilising of society, and, apart from law, the monopoly of literature. That came to an end when the clergy lost the superiority of knowledge, and had to share their influence with profane laymen, trained in the classics, and more familiar with pagan than with Christian writers. There was a common presumption in favour of the new point of view, the larger horizon, of opinions that were founded on classical as well as on Christian material. The Humanists had an independent judgment and could contemplate the world they lived in from outside, without quitting it, standing apart from the customary ways. As Pater said: "The human mind wins for itself a new kingdom of feeling and sensation and thought, not opposed to, but only beyond and independent of the spiritual system then actually realised."

This is one of many causes operating at the time to weaken the notion of ecclesiastical control. It was the triumphant return of an exile, with an uproarious popularity and a claim to compensation for arrears. The enthusiasm of those who were the first to read Homer, and Sophocles, and Plato grew into complaint against those by whose neglect such treasures had been lost. Centuries of ignorance and barbarism had been the consequence. There was not only a world of new ideas, but of ideas that were not Christian, which the Christianity of the West had discarded. They began to recover the lost power, and the ages in which they had been unknown became the ages of darkness. As they were also ages in which the Church had exerted supreme authority, antagonism was not to be averted. The endeavour was not only to make the range of men's thought more comprehensive, but to enrich it with the rejected wisdom of paganism. Religion occupied a narrower space in the new views of life than in those of Dante and the preceding time. The sense of sinfulness was weaker among the Humanists, the standard of virtue was lower; and this was common to the most brilliant of the Italian prelates, such as Aeneas Sylvius, with the king of the Renaissance, Erasmus himself.

Lorenzo Valla, the strongest of the Italian Humanists, is also the one who best exhibits the magnitude of the change that was going on in the minds of men. He had learnt to be a critic, and, what was more rare, a historical critic. He wrote against the belief in the writings of Dionysius the Areopagite, which was one of the fixed positions of theology, then and long after. When the Greeks at the Council of Florence declared themselves unacquainted with the Apostles' Creed, Valla warned the Latins not to speak of it as an apostolic composition. During a war between Rome and Naples, Valla, in the Neapolitan service, attacked the Donation of Constantine as the basis of the temporal power, and exhorted Pope Eugenius to abandon what was a usurpation, and a usurpation founded on fraud. Formidable in all the armour of the new learning, he did more than any other man to spread the conviction that the favourite arguments of the clergy were destined to go down before the better opinion of profane scholars. Valla is also the link between Italy and Germany. His critical essay on the New Testament in the Vulgate influenced Erasmus, who published it in 1505. His tract against the Donation, as the title-deed of the temporal sovereignty, was printed by Ulrich von Hutten, and spread that belief that the Pope was an antichrist, which was afterwards an important article of the Huguenot Church. He was also a forerunner of the Reformation by his tract on the Freedom of the Will. This man, who displayed so conspicuously the resentful and iconoclastic spirit, the religious scepticism, the moral indifference, the aversion for the papal sovereignty, the contempt for the laws and politics of feudalism, the hope and expectation of a mighty change, was an official in the Pope's household.