He used to teach that God was incorporeal, as Plato also asserted, and that his providence extends over all the heavenly bodies; also, that he is incapable of motion. And that he governs all things upon earth with reference to their sympathy with the heavenly bodies. Another of his doctrines was, that besides the four elements there is one other, making the fifth, of which all the heavenly bodies are composed; and that this one possesses a motion peculiar to itself, for it is a circular one. That the soul is incorporeal, being the first ἐντελέχεια; for it is the ἐντελέχεια of a physical and organic body, having an existence in consequence of a capacity for existence. And this is, according to him, of a twofold nature. By the word ἐντελέχεια, he means something which has an incorporeal species, either in capacity, as a figure of Mercury in wax, which has a capacity for assuming any shape; or a statue in brass; and so the perfection of the Mercury or of the statue is called ἐντελέχεια, with reference to its habit. But when he speaks of the ἐντελέχεια[47] of a natural body, he does so because, of bodies some are wrought by the hands, as for instance, those which are made by artists, for instance, a tower, or a ship; and some exist by nature, as the bodies of plants and animals. He has also used the term with reference to an organic body, that is to say, with reference to something that is made, as the faculty of sight for seeing, or the faculty of hearing for the purpose of hearing. The capacity of having life must exist in the thing itself. But the capacity is twofold, either in habit or in operation. In operation, as a man, when awake, is said to have a soul; in habit, as the same is said of a man when asleep. That, therefore, he may come under his definition, he has added the word capacity. He has also given other definitions on a great many subjects, which it would be tedious to enumerate here. For he was in every thing a man of the greatest industry and ingenuity, as is plain from all his works which I have lately given a list of; which are in number nearly four hundred, the genuineness of which is undoubted. There are, also, a great many other works attributed to him, and a number of apophthegms which he never committed to paper. XIV. There were eight persons of the name of Aristotle. First of all, the philosopher of whom we have been speaking; the second was an Athenian statesman, some of whose forensic orations, of great elegance, are still extant; the third was a man who wrote a treatise on the Iliad; the fourth, a Siciliot orator, who wrote a reply to the Panegyric of Isocrates; the fifth was the man who was surnamed Myth, a friend of Æschines, the pupil of Socrates; the sixth was a Cyrenean, who wrote a treatise on Poetry; the seventh was a schoolmaster, who is mentioned by Aristoxenus in his Life of Plato; the eighth, was an obscure grammarian, to whom a treatise on Pleonasm is attributed.