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I. Eudoxus was the son of Aeschines, and a native of Cnidos. He was an astronomer, a geometrician, a physician, and a lawgiver. In geometry he was a pupil of Archytas, and in medicine of Philistion, the Sicilian, as Callimachus relates in his Tablets; and Sotion, in his Successions, asserts that he was likewise a pupil of Plato; for that, when he was twenty-three years of age, and in very narrow circumstances, he came to Athens with Theomedon the physician, by whom he was chiefly supported, being attracted by the reputation of the Socratic school. Some say that his attachment to Theomedon was cemented by nearer ties. And when he had arrived at Piraeus, he went up to the city every day, and when he had heard the Sophists lecture he returned. And having spent two months there, he returned home again; and being again aided by the contributions of his friends, he set sail for Egypt, with Chrysippus the physician, bearing letters of introduction from Agesilaus to Nectanabis, and that he recommended him to the priests.
II. And having remained there a year and four months, he shaved his eyebrows after the manner of the Egyptian priests, and composed, as it is said, the treatise called the Octacteris. From thence he went to Cyzicus, and to the Propontis, in both of which places he lived as a Sophist; he also went to the court of Mansolus. And then, in this manner, he returned again to Athens, having a great many disciples with him, for the sake, as some say, of annoying Plato, because he had originally discarded him from his school. Some say, that when Plato gave an entertainment on one occasion, Eudoxus, as the guests were very numerous, introduced the fashion of sitting in a semicircle.
Nichomachus, the son of Aristotle, affirms that he used to say, that pleasure was the good.
III. He was received in his own country with great honours, as the decree that was passed respecting him shows. He was also accounted very illustrious among the Greeks, having given laws to his own fellow citizens, as Hermippus tells us in the fourth book of his account of the Seven Wise Men; and having also written treatises on Astronomy and Geometry, and several other considerable works.
He had three daughters, Actis, Philtis, and Delphis. And Eratosthenes asserts, in his books addressed to Baton, that he also composed dialogues entitled Dialogues of Dogs; others say that these were written by some Egyptians, in their own language, and that Eudoxus translated them, and published them in Greece. One of his pupils was Chrysippus, of Cnidos, son of Erineus, who learnt of him all that he knew about the Gods, and the world, and the heavenly bodies; and who learnt medicine from Philistion the Sicilian. He also left some very admirable Reminiscences.
IV. He had a son of the name of Aristagoras, who was the teacher of Chrysippus, the son of Aëthlius; he was the author of a work on Remedies for the Eyes, as speculations on natural philosophy had come very much under his notice.
VI. There were three people of the name of Eudoxus. The first this man of whom we are speaking; the second, a Rhodian, who wrote histories; the third, a Sicilist, a son of Agathocles, a comic poet, who gained three victories at the Dionysia in the city, and five at the Lenaea,1 as Apollodorus tells us in his Chronicles. We also find another, who was a physician of Cnidos, who is mentioned by this Eudoxus, in his Circuit of the World, where he says that he used to warn people to keep constantly exercising their limbs in every kind of exercise, and their senses too.
VI. The same author says, that the Cnidean Eudoxus flourished about the hundred and third Olympiad; and that he was the inventor of the theory of crooked lines. And he died in his fifty-third year. But when he was in Egypt with Conuphis, of Heliopolis, Apis licked his garment; and so the priests said that he would be short-lived, but very illustrious, as it is reported by Favorinus in his Commentaries. And we have written an epigram on him, that runs thus:
'Tis said, that while at Memphis wise Eudoxus
And instead of Eudoxus, they used to call him Endoxus,2 on account of the brilliancy of his reputation. And since we have gone through the illustrious Pythagoreans, we must now speak of the Promiscuous philosophers, as they call them.
And we will first of all speak of Heraclitus.
1. There were three festivals of Bacchus at Athens at which dramatic contests took place, the Dionysia kat' agrous, or, "in the fields;" the Lênaia, or ta en limnais, or "the marshes," a part of the city near the Acropolis, in which was situated the Lênaion, an enclosure dedicated to Bacchus; and the ta en astei, "in the city," or ta megala Dionysia. The comic contests usually took place at the second or Linaean festivals. Sometimes also at the Great Dionysia.
Scanned and edited for Peithô's Web from The Lives and Opinions of Eminent Philosophers, by Diogenes Laertius, Literally translated by C.D. Yonge. London: Henry G. Bohn, 1853. Footnotes have been converted to endnotes. Some, but not all, of Yonge's spellings of ancient names have been updated.
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