Heraclitus

Heraclitus of Ephesus (Ἡράκλειτος, Herakleitos; c. 535 BC – 475 BC) was a Greek philosopher, known for his doctrine of change being central to the universe, and for establishing the term Logos (λόγος) in Western philosophy as meaning both the source and fundamental order of the Cosmos.

165 quotes found

"In... Heraclitus... Becoming occupies the foremost place. He regarded that which moves, the fire, as the basic element. The difficulty, to reconcile the... one fundamental principle with the infinite variety of phenomena, is solved... by recognizing... strife of... opposites is... a kind of harmony. ...[T]he world is ...one and many ..."the opposite tension" of ...opposites ...constitutes the unity of the One. He says: "...war is common to all and strife is justice ...all things come into being and pass away through strife." ...[T]hat infinite and eternal undifferentiated Being ...cannot ...explain the infinite variety of things. This leads to the antithesis of Being and Becoming and ...to the solution of Heraclitus ...change ...is the fundamental principle; the "imperishable change, that renovates the world," as the poets have called it. But ...change ...is not a material cause and therefore is represented ...by the fire ...both matter and a moving force. ...[[Physics|[P]hysics]] is ...extremely near to ...Heraclitus ...[i]f we replace ..."fire" by ..."energy" ...Energy is a substance, since its total ...does not change, and ...elementary particles can ...be made from this ...Energy may be called the fundamental cause for all change in the world. ...Energy is ...that which moves; it may be called the primary cause of all change, and ...can be transformed into matter or heat or light. The strife between opposites in the philosophy of Heraclitus can be found in the strife between two different forms of energy."

- Heraclitus

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"If neither sub-atomic particles nor organic species exemplify the 'permanent entities' of Greek metaphysics, what else in the real world does so? ...Two hundred years of historical research have had their effect. Whether we turn to social or intellectual history, evolutionary zoology, historical geology or astronomy—whether we consider explanatory theories or star-clusters, societies or cultures, languages or disciplines, organic species or the Earth itself—the verdict is not Parmenidean but Heraclitean. As we now understand it, nothing in the empirical world possesses the permanent unchanging identity which all Greek natural philosophers (the Epicureans apart) presupposed in the ultimate elements of Nature. So, if we... are to entertain metaphysical thoughts about the nature of things-in-general consistent with the rest of our late-twentieth-century ideas, we must explore the consequences of the modern, post-Darwinian or 'populational' approach, as applied not just to species, but to historical entities of all kinds. Confronted with the question, 'How do permanent entities preserve their identity through all their apparent changes?', we must simply deny the validity of the question itself. In its place, we must substitute the question, 'How do historical entities maintain their coherence and continuity, despite all the real changes they undergo?'"

- Heraclitus

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"[O]ur best account of the Theophrastean of Herakleitos is the fuller of the two accounts... in Laertios Diogenes... as follows:— ...He held that Fire was the element, and that all things were an exchange for fire, produced by condensation and rarefaction. But he explains nothing clearly. All things were produced in opposition, and all things were in flux like a river. The all is finite and the world is one. It arises from fire, and is consumed again by fire alternately through all eternity in... cycles. This happens according to fate. That which leads to the becoming of the opposites is called War and Strife; that which leads to the final conflagration is Concord and Peace. He called change the upward and the downward path, and held that the world comes into being in virtue of this. When fire is condensed it becomes moist, and when compressed it turns to water; water being congealed turns to earth, and this he calls the downward path. And, again, the earth is in turn liquefied, and from it water arises, and from that everything else; for he refers almost everything to the evaporation from the sea. This is the path upwards. R. P. 36 He held, too, that exhalations arose both from the sea and the land; some bright and pure, others dark. Fire was nourished by the bright ones, and moisture by the others. He does not make it clear what is the nature of that which surrounds the world. He held, however, that there were bowls in it with the concave sides turned towards us, in which the bright exhalations were collected and produced flames. These were the heavenly bodies. The flame of the sun was the brightest and warmest; for the other heavenly bodies were more distant from the earth; and for that reason gave less light and heat. The moon, on the other hand, was nearer the earth; but it moved through an impure region. The sun moved in a bright and unmixed region, and at the same time was at just the right distance from us. That is why it gives more heat and light. The eclipses of the sun and moon were due to the turning of the bowls upwards, while the monthly phases of the moon were produced by a gradual turning of its bowl. Day and night, months and seasons and years, rains and winds, and things like these, were due to the different exhalations. The bright exhalation, when ignited in the circle of the sun, produced day, and the preponderance of the opposite exhalations produced night. The increase of warmth proceeding from the bright exhalation produced summer, and the preponderance of moisture from the dark exhalation produced winter. He assigns the causes of other things in conformity with this. As to the earth, he makes no clear statement about its nature, any more than he does about that of the bowls. These, then, were his opinions. R. P. 39 b."

- Heraclitus

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"The locus classicus on this... is... Sextus Empiricus, which reproduces the account of the Herakleitean psychology given by Ainesidemos... (R. P. 41):— The natural philosopher is of opinion that what surrounds us is rational and endowed with consciousness. According to Herakleitos, when we draw in this divine reason by... respiration, we become rational. In sleep we forget, but at our waking we become conscious once more. For in sleep... the mind... is cut off from... that which surrounds us, and only our connexion... by... respiration is preserved as a... root (from which the rest may spring again); and, when... thus separated, it loses the power of memory... When we awake again... it looks out through the openings of the senses, as if through windows, and coming together with the surrounding mind, it assumes the power of reason. Just... as embers... brought near the fire, change and become red-hot, and go out when they are taken away... so does the portion of... mind... become irrational when... cut off, and... become of like nature to the whole... through the greatest number of openings. In this passage there is... a... large admixture of later... ideas. In particular... identification of "that which surrounds us" with the air... for Herakleitos can have known nothing of air, which in his day was regarded as a form of water... The reference to the pores or openings of the senses is probably foreign... for the theory of pores is due to Alkmaion. ...[T]he distinction between mind and body is far too sharply drawn. ...[T]he important rôle assigned to respiration may very well be Herakleitean; for we ... met with it ...in Anaximenes. ...[T]he striking simile of the embers which glow when ...near the fire is genuine (cf. fr. 77)."

- Heraclitus

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