Single Idea 11380

[catalogued under 9. Objects / F. Identity among Objects / 1. Concept of Identity]

Full Idea

If any two items have a single substance [ousia, primary being] and a single what-it-is-to-be-that-thing [to ti en einai, essence], then they are themselves a single thing.

Gist of Idea

Two things with the same primary being and essence are one thing

Source

Aristotle (Metaphysics [c.324 BCE], 1038b14)

Book Reference

Aristotle: 'The Metaphysics', ed/tr. Lawson-Tancred,Hugh [Penguin 1998], p.216


A Reaction

[alternative translations by Vasilis Politis] This isn't quite the identity of indiscernibles, because it allows superficial identity along with deep difference (H2O and XYZ, for example, or jadeite and nephrite).

Related Idea

Idea 12081 Aristotle's definitions are not unique, but apply to a range of individuals [Aristotle, by Witt]