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Single Idea 1601

[filed under theme 2. Reason / B. Laws of Thought / 3. Non-Contradiction ]

Full Idea

The most certain of all basic principles is that contradictory propositions are not true at the same time.

Gist of Idea

The most certain basic principle is that contradictories can't be true at the same time

Source

Aristotle (Metaphysics [c.324 BCE], 1011b13)

Book Ref

Roochnik,David: 'The Tragedy of Reason: the Platonic logos' [Routledge 1990], p.149

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A Reaction

Principle of Noncontradiction