Single Idea 599

[catalogued under 9. Objects / B. Unity of Objects / 2. Substance / b. Need for substance]

Full Idea

It may well be necessary that certain unobserved substances exist as it is, even if we cannot know which they are.

Gist of Idea

We may have to postulate unobservable and unknowable substances

Source

Aristotle (Metaphysics [c.324 BCE], 1041a02)

Book Reference

Aristotle: 'Metaphysics', ed/tr. Lawson-Tancred,Hugh [Penguin 1998], p.226

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