About a century after the reign of Julian, Proclus was permitted to teach in the philosophic chair of the academy; and such was his industry that he frequently, in the same day, pronounced five lessons and composed seven hundred lines. His sagacious mind explored the deepest questions of morals and metaphysics, and he ventured to urge eighteen arguments against the Christian doctrine of the creation of the world. But, in the intervals of study, he personally conversed with Pan, Æsculapius, and Minerva, in whose mysteries he was secretly initiated, and whose prostrate statues he adored in the devout persuasion that the philosopher, who is a citizen of the universe, should be the priest of its various deities. An eclipse of the sun announced his approaching end; and his life, with that of his scholar Isidore, compiled by two of their most learned disciples, exhibits a deplorable picture of the second childhood of human reason. [Sidenote: [527-565 A.D.]] Yet the golden chain, as it was fondly styled, of the Platonic succession, continued forty-four years from the death of Proclus to the edict of Justinian, which imposed a perpetual silence on the schools of Athens, and excited the grief and indignation of the few remaining votaries of Grecian science and superstition. Seven friends and philosophers, Diogenes and Hermias, Eulalius and Priscian, Damascius, Isidore, and Simplicius, who dissented from the religion of their sovereign, embraced the resolution of seeking in a foreign land the freedom which was denied in their native country. They had heard, and they credulously believed, that the republic of Plato was realised in the despotic government of Persia, and that a patriot king reigned over the happiest and most virtuous of nations. They were soon astonished by the natural discovery that Persia resembled the other countries of the globe; that Chosroes, who affected the name of a philosopher, was vain, cruel, and ambitious; that bigotry and a spirit of intolerance prevailed among the Magi; that the nobles were haughty, the courtiers servile, and the magistrates unjust; that the guilty sometimes escaped, and that the innocent were often oppressed.