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frequented, as the Academics and Stoics. Some from accidental circumstances, as the Peripatetics; or from jests, as the Cynics. Some again from their dispositions, as the Eudaemonics; some from an opinion, as the Elenctic and Analogical schools. Some from their masters, as the Socratic and Epicurean philosophers; and so on. The Natural Philosophers were so called from their study of nature; the Ethical philosophers from their investigation of questions of morals (Ļ€ĪµĻį½¶ Ļ„į½° į¼”ĪøĪ·). The Dialecticians are they who devote themselves to quibbling on words.

Now there are three divisions of philosophy: Natural, Ethical, and Dialectic. Natural philosophy occupies itself about the world and the things in it; Ethical philosophy about life, and the things which concern us; Dialectics are conversant with the arguments by which both the others are supported.

Natural philosophy prevailed till the time of Archelaus; but after the time of Socrates, Ethical philosophy was predominant; and after the time of Zeno the Eleatic, Dialectic philosophy got the upper hand.

Ethical philosophy was subdivided into ten sects; the Academic, the Cyrenaic, the Elian, the Megaric, the Cynic, the Eretrian, the Dialectic, the Peripatetic, the Stoic, and the Epicurean. Of the old Academic school Plato was the president; of the middle, Arcesilaus; and of the New, Lacydes: the Cyrenaic school was founded by Aristippus the Cyrenian; the Elian, by Phaedo, of Elis; the Megaric, by Euclid, of Megara; the Cynic, by Antisthenes, the Athenian; the Eretrian, by Menedemus, of Eretria; the Dialectic by Clitomachus, the Carthaginian; the Peripatetic, by Aristotle, the Stagirite; the Stoic, by Zeno of Citium; the Epicurean school derives its name from Epicurus, its founder.

But Hippobotus, in his Treatise on Sects, says that there are nine sects and schools: first, the Megaric; secondly, the Eretrian; thirdly, the Cyrenaic; fourthly, the Epicurean; fifthly, the Annicerean; sixthly, the Theodorean; seventhly, the sect of Zeno and the Stoics; eighthly, that of the Old Academy; and ninthly, the Peripatetic;ā ā€”not counting either the Cynic, or the Eliac, or the Dialectic school. That also which is called the Pyrrhonean is repudiated by many writers, on account of the obscurity of its principles. But others consider that in some particulars it is a distinct sect, and in others not. For it does appear to be a sectā ā€”for what we call a sect, say they, is one which follows, or appears to follow, a principle which appears to it to be the true one; on which principle we correctly call the Skeptics a sect. But if by the name sect we understand those who incline to rules which are consistent with the principles which they profess, then the Pyrrhonean cannot be called a sect, for they have no rules or principles.

These, then, are the beginnings, these are the successive masters, these are the divisions, and schools of philosophy.

Moreover, it is not long ago, that a new Eclectic school was set up by Potamo, of Alexandria, who picked out of the doctrines of each school what pleased him most. And as he himself says, in his Elementary Instruction, he thinks that there are certain criteria of truth: first of all the faculty which judges, and this is the superior one; the other that which is the foundation of the judgment, being a most exact appearance of the objects. And the first principles of everything he calls matter, and the agent, and the quality, and the place. For they show out of what, and by what, and how, and where anything is done. The end is that to which everything is referred; namely, a life made perfect with every virtue, not without the natural and external qualities of the body.

But we must now speak of the men themselves; and first of all about Thales.

Thales

Thales, then, as Herodotus and Duris and Democritus say, was the son of Euxamius and Cleobule; of the family of the Thelidae, who are Phoenicians by descent, among the most noble of all the descendants of Cadmus and Agenor, as Plato testifies. And he was the first man to whom the name of Wise was given, when Damasius was Archon at Athens, in whose time also the seven wise men had that title given to them, as Demetrius Phalereus records in his Catalog of the Archons. He was enrolled as a citizen at Miletus when he came thither with Neleus, who had been banished from Phoenicia; but a more common statement is that he was a native Milesian, of noble extraction.

After having been immersed in state affairs he applied himself to speculations in natural philosophy; though, as some people state, he left no writings behind him. For the book on Naval Astronomy which is attributed to him is said in reality to be the work of Phocus the Samian. But Callimachus was aware that he was the discoverer of the Lesser Bear; for in his Iambics he speaks of him thus:

And, he, ā€™tis said, did first compute the stars
Which beam in Charlesā€™s wain, and guide the bark
Of the Phoenician sailor oā€™er the sea.

According to others he wrote two books, and no more, about the solstice and the equinox; thinking that everything else was easily to be comprehended. According to other statements, he is said to have been the first who studied astronomy, and who foretold the eclipses and motions of the sun, as Eudemus relates in his history of the discoveries made in astronomy; on which account Xenophanes and Herodotus praise him greatly; and Heraclitus and Democritus confirm this statement.

Some again (one of whom is Choerilus the poet) say that he was the first person who affirmed that the souls of men were immortal; and he was the first person, too, who discovered the path of the sun from one end of the ecliptic to the other, and who, as one account tells us, defined the magnitude of the sun as being seven hundred and twenty times as great as that of the moon. He was also the first person who called the last day

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