But the advocates of the theory that philosophy took its rise among the barbarians go on to explain the different forms it assumed in different countries. As to the Gymnosophists and Druids we are told that they uttered their philosophy in riddles, bidding men to reverence the gods, to abstain from wrongdoing, and to practise courage. That the Gymnosophists at all events despise even death itself is affirmed by Clitarchus in his twelfth book; he also says that the Chaldaeans apply themselves to astronomy and forecasting the future; while the Magi spend their time in the worship of the gods, in sacrifices and in prayers, implying that none but themselves have the ear of the gods. They propound their views concerning the being and origin of the gods, whom they hold to be fire, earth, and water; they condemn the use of images, and especially the error of attributing to the divinities difference of sex. They hold discourse of justice, and deem it impious to practise cremation; but they see no impiety in marriage with a mother or daughter, as Sotion relates in his twenty-third book. Further, they practise divination and forecast the future, declaring that the gods appear to them in visible form. Moreover, they say that the air is full of shapes which stream forth like vapour and enter the eyes of keen-sighted seers. They prohibit personal ornament and the wearing of gold. Their dress is white, they make their bed on the ground, and their food is vegetables, cheese, ⁵ and coarse bread; their staff is a reed and their custom is, so we are told, to stick it into the cheese and take up with it the part they eat.

With the art of magic they were wholly unacquainted, according to Aristotle in his Magicus and Dinon in the fifth book of his History Dinon tells us that the name Zoroaster, literally interpreted, means "star-worshipper"; ⁶ and Hermodorus agrees with him in this. Aristotle in the first book of his dialogue On Philosophy declares that the Magi are more ancient than the Egyptians; and further, that they believe in two principles, the good spirit and the evil spirit, the one called Zeus or Oromasdes, the other Hades or Arimanius. This is confirmed by Hermippus in his first book about the Magi, Eudoxus in his Voyage round the World, and Theopompus in the eighth book of his Philippica. The last-named author says that according to the Magi men will live in a future life and be immortal, and that the world will endure through their invocations. ⁷ This is again confirmed by Eudemus of Rhodes. But Hecataeus relates that according to them the gods are subject to birth. Clearchus of Soli in his tract On Education further makes the Gymnosophists to be descended from the Magi; and some trace the Jews also to the same origin. Furthermore, those who have written about the Magi criticize Herodotus. They urge that Xerxes would never have cast javelins at the sun nor have let down fetters into the sea, since in the creed of the Magi sun and sea are gods. But that statues of the gods should be destroyed by Xerxes was natural enough.

The philosophy of the Egyptians is described as follows so far as relates to the gods and to justice. They say that matter was the first principle, next the four elements were derived from matter, and thus living things of every species were produced. The sun and the moon are gods bearing the names of Osiris and Isis respectively; they make use of the beetle, the dragon, the hawk, and other creatures as symbols of divinity, according to Manetho in his Epitome of Physical Doctrines, and Hecataeus in the first book of his work On the Egyptian Philosophy. They also set up statues and temples to these sacred animals because they do not know the true form of the deity. They hold that the universe is created and perishable, and that it is spherical in shape. They say that the stars consist of fire, and that, according as the fire in them is mixed, so events happen upon earth; that the moon is eclipsed when it falls into the earth's shadow; that the soul survives death and passes into other bodies; that rain is caused by change in the atmosphere; of all other phenomena they give physical explanations, as related by Hecataeus and Aristagoras. They also laid down laws on the subject of justice, which they ascribed to Hermes; and they deified those animals which are serviceable to man. They also claimed to have invented geometry, astronomy, and arithmetic. Thus much concerning the invention of philosophy.

But the first to use the term, and to call himself a philosopher or lover of wisdom, was Pythagoras; ⁸ for, said he, no man is wise, but God alone. Heraclides of Pontus, in his De mortua, makes him say this at Sicyon in conversation with Leon, who was the prince of that city or of Phlius. All too quickly the study was called wisdom and its professor a sage, to denote his attainment of mental perfection; while the student who took it up was a philosopher or lover of wisdom. Sophists was another name for the wise men, and not only for philosophers but for the poets also. And so Cratinus when praising Homer and Hesiod in his Archilochi gives them the title of sophist.

The men who were commonly regarded as sages were the following: Thales, Solon, Periander, Cleobulus, Chilon, Bias, Pittacus. To these are added Anacharsis the Scythian, Myson of Chen, Pherecydes of Syros, Epimenides the Cretan; and by some even Pisistratus the tyrant. So much for the sages or wise men. ⁹

But philosophy, the pursuit of wisdom, has had a twofold origin; it started with Anaximander on the one hand, with Pythagoras on the other. The former was a pupil of Thales, Pythagoras was taught by Pherecydes. The one school was called Ionian, because Thales, a Milesian and therefore an Ionian, instructed Anaximander; the other school was called Italian from Pythagoras, who worked for the most part in Italy. And the one school, that of Ionia, terminates with Clitomachus and Chrysippus and Theophrastus, that of Italy with Epicurus. The succession passes from Thales through Anaximander, Anaximenes, Anaxagoras, Archelaus, to Socrates, who introduced ethics or moral philosophy; from Socrates to his pupils the Socratics, and especially to Plato, the founder of the Old Academy; from Plato, through Speusippus and Xenocrates, the succession passes to Polemo, Crantor, and Crates, Arcesilaus, founder of the Middle Academy, Lacydes, ¹⁰ founder of the New Academy, Carneades, and Clitomachus. This line brings us to Clitomachus.

There is another which ends with Chrysippus, that is to say by passing from Socrates to Antisthenes, then to Diogenes the Cynic, Crates of Thebes, Zeno of Citium, Cleanthes, Chrysippus. And yet again another ends with Theophrastus; thus from Plato it passes to Aristotle, and from Aristotle to Theophrastus. In this manner the school of Ionia comes to an end.

In the Italian school the order of succession is as follows: first Pherecydes, next Pythagoras, next his son Telauges, then Xenophanes, Parmenides, ¹¹ Zeno of Elea, Leucippus, Democritus, who had many pupils, in particular Nausiphanes [and Naucydes], who were teachers of Epicurus.

Philosophers may be divided into dogmatists and sceptics: all those who make assertions about things assuming that they can be known are dogmatists; while all who suspend their judgement on the ground that things are unknowable are sceptics. Again, some philosophers left writings behind them, while others wrote nothing at all, as was the case according to some authorities with Socrates, Stilpo, Philippus, Menedemus, Pyrrho, Theodorus, Carneades, Bryson; some add Pythagoras and Aristo of Chios, except that they wrote a few letters. Others wrote no more than one treatise each, as Melissus, Parmenides, Anaxagoras. Many works were written by Zeno, more by Xenophanes, more by Democritus, more by Aristotle, more by Epicurus, and still more by Chrysippus. Some schools took their name from cities, as the Elians and the Megarians, the Eretrians and the Cyrenaics; others from localities, as the Academics and the Stoics; others from incidental circumstances, as the Peripatetics; others again from derisive nicknames, as the Cynics; others from their temperaments, as the Eudaemonists or Happiness School; others from a conceit they entertained, as Truth-lovers, Refutationists, and Reasoners from Analogy; others again from their teachers, as Socratics, Epicureans, and the like; some take the name of Physicists from their investigation of nature, others that of Moralists because they discuss morals; while those who are occupied with verbal jugglery are styled Dialecticians.

Philosophy has three parts, physics, ethics, and dialectic or logic. Physics is the part concerned with the universe and all that it contains; ethics that concerned with life and all that has to do with us; while the processes of reasoning employed by both form the processes of dialectic. Physics flourished down to the time of Archelaus; ethics, as we have said, started with Socrates; while dialectic goes as far back as Zeno of Elea. In ethics there have been ten schools: the Academic, the Cyrenaic, the Elian, the Megarian, the Cynic, the Eretrian, the Dialectic, the Peripatetic, the Stoic, and the Epicurean.

The founders of these schools were: of the Old Academy, Plato; of the Middle Academy, Arcesilaus; of the New Academy, Lacydes; of the Cyrenaic, Aristippus of Cyrene; of the Elian, Phaedo of Elis; of the Megarian, Euclides of Megara; of the Cynic, Antisthenes of Athens; of the Eretrian, Menedemus of Eretria; of the Dialectical school, Clitomachus of Carthage; of the Peripatetic, Aristotle of Stagira; of the Stoic, Zeno of Citium; while the Epicurean school took its name from Epicurus himself.

Hippobotus in his work On Philosophical Sects declares that there are nine sects or schools, and gives them in this order: (1) Megarian, (2) Eretrian, (3) Cyrenaic, (4) Epicurean, (5) Annicerean, ¹² (6) Theodorean, (7) Zenonian or Stoie, (8) Old Academic, (9) Peripatetic. He passes over the Cynic, Elian, and Dialectical schools; for as to the Pyrrhonians, so indefinite are their conclusions that hardly any authorities allow them to be a sect; some allow their claim in certain respects, but not in others. It would seem, however, that they are a sect, for we use the term of those who in their attitude to appearance follow or seem to follow some principle; and on this ground we should be justified in calling the Sceptics a sect. But if we are to understand by "sect" a bias in favour of coherent positive doctrines, they could no longer be called a sect, ¹³ for they have no positive doctrines. So much for the beginnings of philosophy, its subsequent developments, its various parts, and the number of the philosophic sects.

One word more: not long ago an Eclectic school was introduced by Potamo of Alexandria, ¹⁴ who made a selection from the tenets of all the existing sects. As he himself states in his Elements of Philosophy, he takes as criteria of truth (1) that by which the judgement is formed, namely, the ruling principle of the soul; (2) the instrument used, for instance the most accurate perception. His universal principles are matter and the efficient cause, quality, and place; for that out of which and that by which a thing is made, as well as the quality with which and the place in which it is made, are principles. The end to which he refers all actions is life made perfect in all virtue, natural advantages of body and environment being indispensable to its attainment.

It remains to speak of the philosophers themselves, and in the first place of Thales.