Matteo Palmieri, who pronounced the funeral oration of Messer Carlo Aretino, sprang from an honourable Florentine stock, and by his own abilities rose to a station of considerable public influence. He is principally famous as the author of a mystical poem called 'Città di Vita,' which, though it was condemned for its heretical opinions, obtained from Ficinus for its author the title of _Poeta Theologicus_. To discuss the circumstances under which this allegory in the style of Dante was composed, the secresy in which it was involved until the poet's death, and the relation of Palmieri's views to heresies in vogue at Florence, belongs to a future section of my work.[164] He claims a passing notice here among the humanists who acquired high place and honour by the credit of his eloquence and style. [Footnote 164: See Vespasiano, p. 500. Tiraboschi, vol. vi. p. 678. App. iii. to vol. v. of this work.] Giannozzo Manetti belonged to an illustrious house, and in his youth, like other well-born Florentines, was trained for mercantile affairs.[165] At the age of five-and-twenty he threw off the parental control, and gave himself entirely to letters. So obstinate was his industry in the acquisition of knowledge, that he allowed himself only five hours of sleep, and spent the rest of his life in study. During nine whole years he never crossed the Arno, but remained within the walls of his house and garden, which communicated with the Convent of S. Spirito. Being passionately fond of disputation, he sought his chief amusement there in the debating society founded by Marsigli. Ambrogio Traversari was his master in Greek. Latin he had no difficulty in acquiring, and soon gained such facility in its exercise that even Lionardo Bruni is said to have envied his fluency. He was not, however, contented with these languages, and in order to perfect himself in Hebrew he kept a Jew in his own house.[166] When he had acquired sufficient familiarity with Hebrew, he turned the arms supplied him by his tutors against their heresies, basing his arguments upon such interpretations of texts as his superior philology suggested to him. The great work of his literary leisure was a polemical discourse 'Contra Judæos et Gentes,' for, unlike Marsuppini, he placed his erudition solely at the service of the Christian faith. Another fruit of his Hebrew studies was a new translation of the Psalms from the original. [Footnote 165: The sources for Manetti's Life are Vespasiano and an anonymous Latin biography in Muratori. Besides the small Life of Vespasiano in his _Vite d'Uomini Illustri_, I have had recourse to his _Comentario della Vita di Gianozo Manetti_, Turin, 1862.] [Footnote 166: 'Tenne in casa dua Greci et uno Ebreo che s'era fatto Cristiano, et non voleva che il Greco parlasse con lui se non in greco, et il simile il Ebreo in ebreo.'--_Comentario_, p. 11.]