Humanism owes its rapid development in Italy not indeed to the universities, for the universities, committed entirely to the Scholastic principles of education, were generally hostile, but rather to the exertions of wandering teachers and to the generous support of powerful patrons. In Rome it was the Popes who provided funds for the support of Humanist scholars, for the collection and copying of manuscripts, and for the erection of libraries where the great literary treasures of Greece and Rome might be available for the general public; in Florence it was the de' Medici, notably Cosmo (1429-64) and Lorenzo the Magnificent (1449-92), by whose exertions Florence became the greatest centre of literary activity in Europe; in Milan it was the Viscontis and the Sforzas; in Urbino Duke Federigo and his friends; and in Ferrara and Mantua the families of d'Este and Gonzaga. Academies took the place of universities. Of these the academy of Florence, supported by the de' Medici and patronised by the leading Greek and Italian scholars, was by far the most influential and most widely known. The academy of Rome, founded (1460) by Pomponius Laetus, was frankly Pagan in its tone and as such was suppressed by Paul II. It was revived, however, and patronised by Sixtus IV., Julius II., and Leo X. Similar institutions were to be found in most of the Italian States, notably at Venice and Naples. In nearly all these cities valuable manuscript libraries were being amassed, and were placed generously at the disposal of scholars.
Another important aid to the popularisation of the works of the Greek and Latin writers was the invention of printing and its introduction into Italy. The first printing press in Italy was established at the Benedictine monastery of Subiaco, whence it was transferred to Rome.
From this press were issued editions of the Latin classics, such as the works of Lactantius, Caesar, Livy, Aulus Gellius, Virgil, Lucan, Cicero, and Ovid. Aldo Manuzio, himself an enthusiastic student of Greek literature, settled at Venice in 1490, and established a printing press with the intention of bringing out editions of the principal Greek authors. His house was the great centre for Greek scholars from all parts of Italy, and from the Aldine Press were issued cheap and accurate editions of the Greek classics. Later on when Florence and Milan were disturbed by the invasion of Charles VIII. of France (1483-98), and when Naples was captured by the Spaniards the Humanist movement found a generous patron in Leo X., a scion of de' Medici family. From the press founded by Leo X. many classical texts were issued till the pillaging of the city by the imperial troops in 1527 dealt a death blow to the revival in Italy.
That there was no opposition between the study of the classics and the teaching of Christianity is evidenced by the friendly attitude adopted by the Papacy towards the Humanist movement. The Avignon Popes, Benedict XII. (1334-42) and Clement VI. (1342-52), heaped honours and emoluments upon Petrarch and provided him with the means of acquiring manuscripts and of meeting scholars likely to assist him. A similar attitude towards the movement was adopted by Urban V. (1362-70). The leading classical scholars such as Coluccio, Salutati, Francesco Bruni, Lionardo d'Aretino, etc., were employed at the Papal court, and the apostolic college of secretaries became one of the greatest centres for the propagation of Humanism. The troubles that fell upon the Church during the Great Western Schism diverted the attention of the rival Popes from literary pursuits; but as soon as peace had been restored by the Council of Constance Martin V. (1417-31) assembled around him in Rome many of the ablest classical scholars, and vied with his cardinals in his protection of the Humanist movement. Eugene IV. (1431-47) was, if anything, more favourable, but yet his sympathies did not blind him to the dangerous tendencies of the revival as manifested in the books of men like Beccadelli.[7]
With the election of Nicholas V. (1447-55)[8] the triumph of Humanism at Rome seemed secure. The new Pope was himself one of the party. As a tutor in Florence he had been brought into contact with the great literary men of the time and had become an ardent student of the classics, nor did his enthusiasm lose any of its ardour when he ascended the Papal throne. His aim was to make Rome the intellectual as well as the religious capital of the world, and with this object in view he invited to his court the most distinguished scholars of the age, and bestowed upon not a few of them, such as Albergati, Capranica, and Caesarini the rank of cardinal. That he fully recognised the advantages which religion might derive from the revival of letters, and that he aimed at employing the services of the Humanists in defence of Christianity is evident from the works to which he directed the attention of scholars. The texts of the Scripture, the translations of the Greek Fathers, and the preparation of critical studies on the Lives of the Saints were amongst the works recommended to his literary friends. At the same time he did not proclaim war upon the less orthodox of the Humanist school. Men like Valla, Poggio, Filelfo, and Marsuppini were treated with friendliness and even with favour. Whether such a line of conduct was dictated by prudence and by the hope of winning over these scholars to a better understanding, or whether his anxiety for the success of his own literary schemes blinded him to the serious excesses of such leaders it is difficult to say; but, at any rate, it serves to show the great liberty enjoyed by literary men at this period even in the very city of the Popes.