The earliest recorded philosophical use of the term "phusis" occurs in the fragments of Heraclitus (most notably at B1 and B123). Phusis, in the non-philosophical writings relevant to Heraclitus’s time (e.g. from Homer to Aeschylus and Pindar), was generally used to characterize the external physical appearance of something. Heraclitus, on the other hand, seems to have used the term in the completely opposite manner: an object’s phusis is hidden (kruptesthai) and greater (kreissōn) than the external appearance (B123 and B54). Despite (...) this difference, Heraclitus’s use has an affinity with the common use in his time: phusis is used to characterize things. In B1, for example, Heraclitus makes it clear that he is interested in explaining the nature of each thing as opposed to some cosmic principle of Nature. By examining various fragments, I make the case that the phusis of a thing, for Heraclitus, can be defined as the set of opposites necessarily inherent in an object upon which all objects of that kind depend for their existence. The interesting result is that Heraclitus’s novel use of phusis happens to be the foundation for one of the ways in which opposites form a unity. This particular thesis states that there are essential properties inherent in objects which are pairs of opposites sufficient to determine the unity of the object in question. If this is right, then we can read some fragments which contain descriptions of worldly objects (e.g. bows, lyres, rivers, barley drinks etc.) in a new light. These descriptions of worldly objects might not be meant to stand as metaphoric symbols for cosmic principles, as is often thought; rather, they can be read as instances of Heraclitus attempting to do a metaphysics of objects. (shrink)

We propose in this article some new elements for the interpretation of Heraclitus' doctrine, concerning in particular the role of the opposition of contraries as generator of harmony, that results from Fragments 8DK and 51DK. This interpretation is based on the conceptual tool of matrices of concepts. After having described the basic elements that govern the latter, we set out to define in this conceptual framework the notions of opposition and contrary, as well as of harmony. This allows us to (...) give an interpretation and also a justification of Heraclitus' specific doctrine, according to which the opposition of opposites generates harmony. (shrink)

This article provides a defence of B112, arguing that, far from being a weak paraphrase, the fragment is a genuine piece of Heraclitean art packing into a few, carefully organized words Heraclitus’ original view on human life and ethos, deeply integrated with the whole of his thought. In so doing, it counters the ‘deflationary reading’ of Heraclitus’ moral philosophy and, connecting B112 to other fragments, attributes him a robust and original ethical framework, pivoting on the idea that grasping the harmony (...) of opposites as the all-pervasive, world-sustaining pattern unavoidably and instantly transforms the way one lives, causing ‘to act and speak the truth’. It offers an interpretation of this puzzling phrase, suggesting that, as the world-unifying pattern of opposites applies also to the objects of human pursuits and avoidances, this is the ἀληθέα Heraclitus’ wise man signifies in words and actions; it concludes providing examples. (shrink)