Vitae philosophorum

Diogenes Laertius

Diogenes Laertius. Hicks, R. D., editor. Cambridge, MA.: Harvard University Press; London: William Heinemann Ltd., 1925.

He was exceptional from his boyhood; for when a youth he used to say that he knew nothing, although when he was grown up he claimed that he knew everything. He was nobody’s pupil, but he declared that he inquired of himself,[*](Fr. 101 D., 80 B.) and learned everything from himself. Some, however, had said that he had been a pupil of Xenophanes, as we learn from Sotion, who also tells us that Ariston in his book On Heraclitus declares that he was cured of the dropsy and died of another disease. And Hippobotus has the same story.

As to the work which passes as his, it is a continuous treatise On Nature, but is divided into three discourses, one on the universe, another on politics, and a third on theology.

This book he deposited in the temple of Artemis and, according to some, he deliberately made it the more obscure in order that none but adepts should approach it, and lest familiarity should breed contempt. Of our philosopher Timon[*](Fr. 43 D.) gives a sketch in these words[*](Cf.Il. i. 247, 248.):

In their midst uprose shrill, cuckoo-like, a mob-reviler, riddling Heraclitus.

Theophrastus puts it down to melancholy that some parts of his work are half-finished, while other parts make a strange medley. As a proof of his magnanimity Antisthenes in his Successions of Philosophers

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cites the fact that he renounced his claim to the kingship in favour of his brother. So great fame did his book win that a sect was founded and called the Heracliteans, after him.

Here is a general summary of his doctrines. All things are composed of fire, and into fire they are again resolved; further, all things come about by destiny, and existent things are brought into harmony by the clash of opposing currents; again, all things are filled with souls and divinities. He has also given an account of all the orderly happenings in the universe, and declares the sun to be no larger than it appears. Another of his sayings is: Of soul thou shalt never find boundaries, not if thou trackest it on every path; so deep is its cause.[*](Fr. 45 D., 71 B.) Self-conceit he used to call a falling sickness (epilepsy) and eyesight a lying sense.[*](Fr. 46 D., 132 B.) Sometimes, however, his utterances are clear and distinct, so that even the dullest can easily understand and derive therefrom elevation of soul. For brevity and weightiness his exposition is incomparable.

Coming now to his particular tenets, we may state them as follows: fire is the element, all things are exchange for fire and come into being by rarefaction and condensation[*](Cf. Fr. 90 D., 22 B.); but of this he gives no clear explanation. All things come into being by conflict of opposites, and the sum of things flows like a stream. Further, all that is is limited and forms one world. And it is alternately born from fire and again resolved into fire in fixed cycles to all eternity, and this is determined by destiny. Of the opposites that which tends to birth or creation is called war and strife, and that which tends to destruction by fire is called concord and peace.[*](Cf. Fr. 80 D., 62 B.) Change he called

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a pathway up and down, and this determines the birth of the world.

For fire by contracting turns into moisture, and this condensing turns into water; water again when congealed turns into earth. This process he calls the downward path. Then again earth is liquefied, and thus gives rise to water, and from water the rest of the series is derived. He reduces nearly everything to exhalation from the sea. This process is the upward path. Exhalations arise from earth as well as from sea; those from sea are bright and pure, those from earth dark. Fire is fed by the bright exhalations, the moist element by the others. He does not make clear the nature of the surrounding element. He says, however, that there are in it bowls with their concavities turned towards us, in which the bright exhalations collect and produce flames. These are the stars.