Vitae philosophorum
Diogenes Laertius
Diogenes Laertius. Hicks, R. D., editor. Cambridge, MA.: Harvard University Press; London: William Heinemann Ltd., 1925.
that he discussed moral questions in the workshops and the market-place, being convinced that the study of nature is no concern of ours; and that he claimed that his inquiries embraced
Whatso’er is good or evil in an house[*](Hom. Od. iv. 392.);that frequently, owing to his vehemence in argument, men set upon him with their fists or tore his hair out; and that for the most part he was despised and laughed at, yet bore all this ill-usage patiently. So much so that, when he had been kicked, and
Unlike most philosophers, he had no need to travel, except when required to go on an expedition. The rest of his life he stayed at home and engaged all the more keenly in argument with anyone who would converse with him, his aim being not to alter his opinion but to get at the truth. They relate that Euripides gave him the treatise of Heraclitus and asked his opinion upon it, and that his reply was, The part I understand is excellent, and so too is, I dare say, the part I do not understand; but it needs a Delian diver to get to the bottom of it.
He took care to exercise his body and kept in good condition. At all events he served on the expedition to Amphipolis; and when in the battle of Delium Xenophon had fallen from his horse, he stepped in and saved his life.
For in the general flight of the Athenians he personally retired at his ease, quietly turning round from time to time and ready to defend himself in case he were attacked. Again, he served at Potidaea, whither he had gone by sea, as land communications were interrupted by the war[*](The reason assigned for an expedition to Potidaea by sea will not hold. Communications between Athens and Thrace were, as a rule, made by sea. Moreover, the siege of Potidaea began in 432 b.c., the year before the outbreak of the Peloponnesian war. It has been suggested that the words διὰ θαλάττης ... κωλύοντος should properly follow Ἰσθμόν eight lines lower down. If any Athenian wished to attend the Isthmian games during the early part of the Peloponnesian war, it was probably safer not to risk the land journey owing to the bitter hostility of the Megarians.); and while there he is said to have remained a whole night without changing his position, and to have won the prize of valour. But he resigned it to Alcibiades, for whom he cherished the tenderest affection, according to Aristippus in the fourth book of his treatise On the Luxury of the Ancients. Ion of