France. An example of how tradition blindly echoes opinions respecting him, without having observed from his works whether they are justified or not, is the fact that in the old Æsthetics the three unities of the drama—action, time and place—were held to be _règles d’Aristote, la saine doctrine_. But Aristotle speaks (Poet. c. 8 et 5)[78] only of the unity of treatment, or very occasionally of the unity of time; of the third unity, that of place, he says nothing. As regards Aristotle’s life, he was born at Stagira, a Thracian town on the Strymonian Gulf, but a Greek colony. Thus, though a Thracian, he was by birth a Greek. This Greek colony fell, however, like The rest of the country, under the rule of Philip of Macedon. The year of Aristotle’s birth is the first of the 99th Olympiad (384 B.C.), and if Plato was born in the third year of the 87th Olympiad (430 B.C.), Aristotle must have been forty-six years younger than he. His father Nicomachus was physician to the Macedonian king, Amyntas, the father of Philip. After the death of his parents, whom he lost early, he was brought up by a certain Proxenus, to whom he was ever grateful; and during all his life he held the memory of this friend in such high esteem, that he honoured it by erecting statues to him. He also requited Proxenus for the education given him, by later on bringing up his son Nicanor, adopting him as his own son and making him his heir. In the seventeenth year of his age Aristotle came to Athens, and remained there twenty years in company with Plato.[79] He thus had the best possible opportunity of becoming thoroughly acquainted with Plato’s philosophy, and therefore, if we are told that he did not understand it (Vol. I p. 167), this is shown, by the evident facts of the case, to be an arbitrary and quite unfounded assumption. As regards the relation of Plato to Aristotle, and particularly as regards the fact that Plato did not select Aristotle as his successor in the Academy, but chose Speusippus, a near relative, instead, a number of idle and contradictory anecdotes have come to us from Diogenes (V. 2). If the continuation of the Platonic school was designed to express the hope that the philosophy of Plato, as comprehended by himself, was to be there satisfactorily maintained, Plato could certainly not designate Aristotle as his successor, and Speusippus was the right man to be selected. However, Plato had nevertheless Aristotle as his successor, for Aristotle understood Philosophy in Plato’s sense, though his philosophy was deeper and more worked out, and thus he carried it further. Displeasure at being thus passed over is said to have been the cause of Aristotle’s leaving Athens after Plato’s death, and living for three years with Hermias, the Tyrant of Atarneus in Mysia, who had been a disciple of Plato along with Aristotle, and who had then struck up a close friendship with the latter. Hermias, an independent prince,