of so many libraries groan, by which also, we may justly say, not a few strong intellects have been lost to the living world, smothered beneath heaps of cumbrous babblement, in extent infinite, in value infinitesimal. After the death of Plato in the year 347, Aristotle retired for a few years to the court of his fellow-student and friend Hermias, then ruler of Atarnæ, on the coast of Asia Minor. This change of scene was necessary for him, while on the one hand his scheme of establishing a new school of philosophy was yet immature, and, on the other hand, the political relations between Macedonia and Athens were not such as that it would be pleasant for him to be identified with a city which might soon be forced into hostility with his natural sovereign. It was fruitful also, no doubt, in those shrewd observations on men and manners which stamp so many sagacious pages in his moral and political treatises. From this judicious retirement after a few years he was called to a field of more {139} honourable and influential activity. In the year 342 he received a letter from Philip of Macedon, requesting him to undertake the office of tutor to his young son Alexander. The duties of this position he performed with such results to his royal pupil as in such circumstances were to be expected; and with the great advantage to himself of adding the resources of an absolute monarch and a great conqueror to his own private instruments for the prosecution of scientific research. The unexpected death of Philip by the hands of an assassin, called Alexander prematurely to dash into that brilliant career of Asiatic victory which has made his name no less famous than that of his tutor, who by this event relieved at once from personal responsibility and political apprehension, found himself in a position to establish that independent school of wisdom at Athens, which now for more than two thousand years has propagated itself in the world as the natural and necessary complement to the Platonic style of thought. In the year 334 he pitched his intellectual camp at the Lyceum, in the eastern suburbs of Athens, under Mount Lycabettus, and here during the space of thirteen years he remained exercising towards his scholars the diverse functions of fatherhood and fraternity, which in the ancient philosophical associations, as in the early Christian Churches, were so happily combined. After the death of Alexander, in the year 322, he left Athens and retired to Chalcis, in Eubœa, where he had a small property; a migration to which political considerations must have been the main inducement, for so distinguished a dependant of the Macedonian court could scarcely look upon himself as safe in {140} the Attic capital the moment that the death of the great conqueror opened up to the most distinguished people whom his arms had subjugated the prospect of political liberation. The philosopher, accordingly, when leaving the city of his