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]