In the Middle Ages knowledge of Greek and Latin literatures had withdrawn itself into monasteries, and there narrowed till of secular Latin writing scarcely any knowledge remained save of Vergil (because of his supposed Messianic prophecy) and Statius, and of Greek, except Aristotle, none at all.

What had been lost in the Western Empire, however, subsisted in the East, and the continual advance of the Turk on the territories of the Emperors of Constantinople drove westward to the shelter of Italy and the Church, and to the patronage of the Medicis, a crowd of scholars who brought with them their manuscripts of Homer and the dramatists, of Thucydides and Herodotus, and most momentous perhaps for the age to come, of Plato and Demosthenes and of the New Testament in its original Greek.

The quick and vivid intellect of Italy, which had been torpid in the decadence of mediaevalism and its mysticism and piety, seized with avidity the revelation of the classical world which the scholars and their manuscripts brought.

Human life, which the mediaeval Church had taught them to regard but as a threshold and stepping-stone to eternity, acquired suddenly a new momentousness and value; the promises of the Church paled like its lamps at sunrise; and a new paganism, which had Plato for its high priest, and Demosthenes and Pericles for its archetypes and examples, ran like wild-fire through Italy.

The Greek spirit seized on art, and produced Raphael, Leonardo, and Michel Angelo; on literature and philosophy and gave us Pico della Mirandula, on life and gave us the Medicis and Castiglione and Machiavelli.