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Ideas for 'The Roots of Reference', 'Goodbye Descartes' and 'Posterior Analytics'

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2. Reason / B. Laws of Thought / 4. Contraries

1684	Two falsehoods can be contrary to one another [Aristotle]
	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.
	From: Aristotle (Posterior Analytics [c.327 BCE], 88a29)