The Florentine Niccolo Niccoli, a member of that accomplished circle of friends which surrounded the elder Cosimo de' Medici, spent his whole fortune in buying books. At last, when his money was all gone, the Medici put their purse at his disposal for any sum which his purpose might require. We owe to him the later books of Ammianus Marcellinus, the 'De Oratore' of Cicero, and other works; he persuaded Cosimo to buy the best manuscript of Pliny from a monastery at Lubeck. With noble confidence he lent his books to those who asked for them, allowed all comers to study them in his own house, and was ready to converse with the students on what they had read. His collection of 800 volumes, valued at 6,000 gold florins, passed after his death, through Cosimo's intervention, to the monastery of San Marco, on the condition that it should be accessible to the public.
Of the two great book-finders, Guarino and Poggio, the latter, on the occasion of the Council of Constance and acting partly as the agent of Niccoli, searched industriously among the abbeys of South Germany. He there discovered six orations of Cicero, and the first complete Quintilian, that of St. Gallen, now at Zurich; in thirty-two days he is said to have copied the whole of it in a beautiful handwriting. He was able to make important additions to Silius Italicus, Manilius, Lucretius, Valerius Flaccus, Asconius Pedianus, Columella, Celsus, Aulus Gellius, Statius, and others; and with the help of Leonardo Aretino he unearthed the last twelve comedies of Plautus, as well as the Verrine orations.
