Law of noncontradiction
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In logic, the law of noncontradiction (also called the law of contradiction) states, in the words of Aristotle, that "one cannot say of something that it is and that it is not in the same respect and at the same time". It is one of the three classic laws of thought.
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See also
- Contradiction
- First principle
- Identity (philosophy)
- Law of excluded middle
- Law of identity
- Laws of thought
- Liar's Paradox
- Peirce's law
- Principle of bivalence
- Principle of explosion
- Reductio ad absurdum
- Three classic laws of thought
- Oxymoron
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