Ousia In classical Greek philosophy, ousia (a noun derived from the present participle of the Greek verb "to be") most often expresses one or another of four closely connected concepts: (1) what something is in itself, its being or...

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Ousia (Οὐσία), is the Ancient Greek noun formed on the feminine present participle for the Greek verb "to be", εἶναι, (such a participle in English, is "being"). It is often translated, perhaps incorrectly, into Latin and English as,...

Loux sets the stage with a discussion of ousia in the Categories. There, he claims, Aristotle maintained that (1) "basic subjects" are ontologically fundamental, and (2) the essence of each such subject is its species (Aristotle's essentialism). Loux thinks that Aristotle was tacitly...