ARGYROPULUS, JOANNES, a native of Constantinople, was one of the principal revivers of Greek learning in the fifteenth century. He removed to Italy in 1434, where he obtained the patronage of Cosmo de' Medici, whose son Pietro, and grandson Lorenzo, he instructed in Greek. In 1480 he removed from Florence to Rome, where he was appointed to a philosophical chair, and died in 1486. His principal works consist of Latin translations of Aristotle. He was singularly prejudiced against the Latin authors, and against Cicero in particular, to whom he denied any knowledge of Greek or philosophy.