Heracleitus

born с 540, Ephesus, in Anatolia
died с 480 BC

Greek philosopher.

Little is known of his life; the one book he apparently wrote is lost, and his views survive only in short fragments attributed to him. In his cosmology, fire forms the basic material principle of an orderly universe: he called the world order an "ever-living fire kindling in measures and being extinguished in measures," and he extended fire's manifestations to include the ether in the upper atmosphere. The persistence of unity despite change is illustrated by his famous analogy of the river: "Upon those who step into the same rivers, different and ever different waters flow down." Plato later took Heracleitus to mean that all things are in constant flux, regardless of how they appear to the senses.

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▪ Greek philosopher
also spelled  Heraclitus  
born c. 540 BC, Ephesus, in Anatolia [now Selçuk, Tur.]
died c. 480

      Greek philosopher remembered for his cosmology, in which fire forms the basic material principle of an orderly universe. Little is known about his life, and the one book he apparently wrote is lost. His views survive in the short fragments quoted and attributed to him by later authors.

      Though he was primarily concerned with explanations of the world around him, Heracleitus also stressed the need for people to live together in social harmony. He complained that most people failed to comprehend the logos (Greek: “reason”), the universal principle through which all things are interrelated and all natural events occur, and thus lived like dreamers with a false view of the world. A significant manifestation of the logos, Heracleitus claimed, is the underlying connection between opposites. For example, health and disease define each other. Good and evil, hot and cold, and other opposites are similarly related. In addition, he noted that a single substance may be perceived in varied ways—seawater is both harmful (for human beings) and beneficial (for fishes). His understanding of the relation of opposites to each other enabled him to overcome the chaotic and divergent nature of the world, and he asserted that the world exists as a coherent system in which a change in one direction is ultimately balanced by a corresponding change in another. Between all things there is a hidden connection, so that those that are apparently “tending apart” are actually “being brought together.”

      Viewing fire as the essential material uniting all things, Heracleitus wrote that the world order is an “ever-living fire kindling in measures and being extinguished in measures.” He extended the manifestations of fire to include not only fuel, flame, and smoke but also the ether in the upper atmosphere. Part of this air, or pure fire, “turns to” ocean, presumably as rain, and part of the ocean turns to earth. Simultaneously, equal masses of earth and sea everywhere are returning to the respective aspects of sea and fire. The resulting dynamic equilibrium maintains an orderly balance in the world. This persistence of unity despite change is illustrated by Heracleitus' famous analogy of life to a river: “Upon those who step into the same rivers different and ever different waters flow down.” Plato later took this doctrine to mean that all things are in constant flux, regardless of how they appear to the senses.

      Heracleitus was unpopular in his time and was frequently scorned by later biographers. His primary contribution lies in his apprehension of the formal unity of the world of experience.

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Universalium. 2010.

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