Vitae philosophorum

Diogenes Laertius

Diogenes Laertius. Hicks, R. D., editor. Cambridge, MA.: Harvard University Press; London: William Heinemann Ltd., 1925.

He held that the virtues are not mutually interdependent. For a man might be prudent, or again just, and at the same

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time profligate and unable to control his passions. He said too that the wise man was not exempt from all passions, but indulged them in moderation.

He defined friendship as an equality of reciprocal good-will, including under the term as one species the friendship of kinsmen, as another that of lovers, and as a third that of host and guest. [*](Cf. supra, iii. 81. and Aristotle, Rhet. ii. 4 § 28, 1381 b 33) The end of love was not merely intercourse but also philosophy. According to him the wise man would fall in love and take part in politics; furthermore he would marry and reside at a king’s court. Of three kinds of life, the contemplative, the practical, and the pleasure-loving life, he gave the preference to the contemplative. He held that the studies which make up the ordinary education are of service for the attainment of virtue.

In the sphere of natural science he surpassed all other philosophers in the investigation of causes, so that even the most insignificant phenomena were explained by him. Hence the unusual number of scientific notebooks which he compiled. Like Plato he held that God was incorporeal; that his providence extended to the heavenly bodies, that he is unmoved, and that earthly events are regulated by their affinity with them (the heavenly bodies). Besides the four elements he held that there is a fifth, of which the celestial bodies are composed. Its motion is of a different kind from that of the other elements, being circular. Further, he maintained the soul to be incorporeal, defining it as the first entelechy [i.e. realization] of a natural organic body potentially possessed of life.[*](De anima, ii. 1, 412 a 27.)

By the term realization he means that which has an incorporeal form. This realization, according to him, is twofold.

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Either it is potential, as that of Hermes in the wax, provided the wax be adapted to receive the proper mouldings, or as that of the statue implicit in the bronze; or again it is determinate, which is the case with the completed figure of Hermes or the finished statue. The soul is the realization of a natural body, since bodies may be divided into (a) artificial bodies made by the hands of craftsmen, as a tower or a ship, and (b) natural bodies which are the work of nature, such as plants and the bodies of animals. And when he said organic he meant constructed as means to an end, as sight is adapted for seeing and the ear for hearing. Of a body potentially possessed of life, that is, in itself.

There are two senses of potential, one answering to a formed state and the other to its exercise in act. In the latter sense of the term he who is awake is said to have soul, in the former he who is asleep. It was then in order to include the sleeper that Aristotle added the word potential.

He held many other opinions on a variety of subjects which it would be tedious to enumerate. For altogether his industry and invention were remarkable, as is shown by the catalogue of his writings given above, which come to nearly 400 in number, i.e. counting those only the genuineness of which is not disputed. For many other written works and pointed oral sayings are attributed to him.

There were in all eight Aristotles: (1) our philosopher himself; (2) an Athenian statesman,[*](Probably this is the Aristotle who appears in Plato’s dialogue Parmenides.) the author of graceful forensic speeches; (3) a scholar who commented on the Iliad; (4) a Sicilian rhetorician, who wrote a reply to the Panegyric of Isocrates; (5) a disciple of Aeschines the Socratic philosopher,

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surnamed Myth; (6) a native of Cyrene, who wrote upon the art of poetry; (7) a trainer of boys, mentioned by Aristoxenus in his Life of Plato; (8) an obscure grammarian, whose handbook On Redundancy is still extant.

Aristotle of Stagira had many disciples; the most distinguished was Theophrastus, of whom we have next to speak.