Abstract
THE FIRST EXHAUSTIVELY SCIENTIFIC, speculative inquiry into the notion and nature of essence in the Western philosophical tradition is found in Aristotle's Metaphysics. In contrast to the earlier Greek philosophers and Plato, after considering the problem of being and change Aristotle reached the conclusion that the essential identity of material phenomena, or ousia, is an immanent and inseparable quality that forms the identity of each particular phenomenon. In Aristotle's concept, however, which constitutes the original form of phenomenal realism, ousia is not "it"-self some-thing or some it. For though its presence may certainly be speculatively implied, "it" is not. Following Aristotle, though, and for reasons extraneous to the theme of this present article, the speculative inquiry into the nature of essence and phenomenality deviated from the orientation that Aristotle initially imputed to that study, evolving in a philosophical milieu whose theoretical propensity was predominantly transcendental. This article, then, focuses on the problematic of essential identity in the Western transcendental tradition, and, more particularly, seeks to contrast and compare the essence of the transcendental philosophers against the ousia of Aristotle's metaphysic.