The aim of this critical note is to discuss Heraclitus' use of analogy as a pattern of thought not only with argumentative value but also ontological and epistemological status. Heraclitus' analogy is of two kinds and is expressed in the use of the adverbs ὥσπερ ("as") and ὅκωσπερ ("just as"). The first is used as an explanatory device, while the second denotes the ontological homogeneity of logos. Analogy reveals not only the inherent opposition of logos in each single thing, but (...) also the interdependent common interrelation between things. (shrink)