Single Idea 16103

[catalogued under 9. Objects / C. Structure of Objects / 7. Substratum]

Full Idea

To avoid the outcome (possible in 'Categories') that the subject might be nothing at all, Aristotle insists that a legitimate subject must be separate and a 'this' [tode ti]. Forms and composites satisfy the revised criterion in different ways.

Gist of Idea

A subject can't be nothing, so it must qualify as separate, and as having a distinct identity

Source

report of Aristotle (Metaphysics [c.324 BCE], Z.3) by Mary Louise Gill - Aristotle on Substance Ch.3

Book Reference

Gill,Mary Louise: 'Aristotle on Substance: Paradox of Unity' [Princeton 1989], p.83


A Reaction

I take it that we would say that a 'this' is an entity which possesses 'identity', and is perhaps countable. For Aristotle being a 'this' seems to require a possibility of definition. This is a powerful Aristotelian thought, needed in modern metaphysics.