Diogenes Laertius says (IX. 1) that Heraclitus flourished about the 69th Olympiad (500 B.C.), and that he was of Ephesus and in part contemporaneous with Parmenides: he began the separation and withdrawal of philosophers from public affairs and the interests of the country, and devoted himself in his isolation entirely to Philosophy. We have thus three stages: (_α_) the seven sages as statesmen, regents and law-givers; (_β_) the Pythagorean aristocratic league; (_γ_) an interest in science for its own sake. Little more is known of Heraclitus’ life than his relations to his countrymen the Ephesians, and according to Diogenes Laertius (IX. 15, 3), these were for the most part found in the fact that they despised him and were yet more profoundly despised by him—a relationship such as we have now-a-days, when each man exists for himself, and despises everyone else. In the case of this noble character, the disdain and sense of separation from the crowd emanates from the deep sense of the perversity of the ordinary ideas and life of his people: in reference to this, isolated expressions used on various occasions are still preserved. Cicero (Tusc. Quæst. V. 36) and Diogenes Laertius (IX. 2) relate that Heraclitus said: “The Ephesians all deserve to have their necks broken as they grow up, so that the town should be left to minors” (people now say that only youth knows how to govern), “because they drove away his friend Hermodorus, the best of them all, and gave as their reason for so doing that amongst them none should be more excellent than the rest; and if any one were so, it should be elsewhere and amongst others.” It was for the same reason that in the Athenian Democracy great men were banished. Diogenes adds: “His fellow-citizens asked him to take part in the administration of public affairs, but he declined, because he did not like their constitution, laws and administration.” Proclus (T. III. pp. 115, 116, ed. Cousin) says: “The noble Heraclitus blamed the people for being devoid of understanding or thought. ‘What is,’ he says, ‘their understanding or their prudence? Most of them are bad, and few are good.’” Diogenes Laertius (IX. 6) furthermore says: “Antisthenes cites, as a proof of Heraclitus’ greatness, that he left his kingdom to his brother.” He expresses in the strongest manner his contempt for what is esteemed to be truth and right, in the letter preserved to us by Diogenes (IX. 13, 14), in which, to the invitation of Darius Hystaspes, “to make him acquainted with Greek wisdom—for his work on Nature contains a very forcible theory of the world, but it is in many passages obscure—to come to him and explain to him what required explanation” (this is certainly not very probable if Heraclitus’ turn of mind was also Oriental), he is said to have replied: “All mortal men depart from truth and justice and are given over to excess and vain opinions according to their evil understandings. But I, since I have