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The Greek library of Giannozzo Manetti (1396–1459): his collection and his Greek studies

Greek studies were central to the movement of fifteenth‐century Italian humanism, as the humanists claimed themselves. But before 1450, Greek manuscripts were scarce, and many humanists were more enthusiastic about learning the language in theory than in practice. The case of Giannozzo Manetti (1396–1459) helps us understand the nature of humanist Greek studies in practice in this period. My study of Manetti's Greek skills is based on his collection of Greek manuscripts, which have been preserved as a set among the Palatini graeci in the Vatican Library. I compare the way he collected and used his Greek manuscripts with his use of Greek sources in his Latin writings. Whereas Manetti hardly used Greek sources in the 1430s and 1440s, after 1450 he produced new Latin translations from the Greek. I suggest that this change could result from a sudden improvement in his Greek skills, but also from a different modus operandi in the case of his original Latin compositions as opposed to his translations.