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Single Idea 1684

[filed under theme 2. Reason / B. Laws of Thought / 4. Contraries ]

Full Idea

There are falsehoods which are contrary to one another and cannot be the case together e.g. that a man is a horse or a cow.

Gist of Idea

Two falsehoods can be contrary to one another

Source

Aristotle (Posterior Analytics [c.327 BCE], 88a29)

Book Ref

Aristotle: 'Posterior Analytics (2nd ed)', ed/tr. Barnes,Jonathan [OUP 1993], p.44