law of contradiction

American  

noun

Logic.

1. the law that a proposition cannot be both true and false or that a thing cannot both have and not have a given property.

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Example Sentences

The law of contradiction, after all, is not enforceable; if it were the jails would overflow.

From The Wall Street Journal • Oct. 2, 2016

You cannot make the past other than it was—true, but this is a mere application of the law of contradiction.

From Mysticism and Logic and Other Essays by Russell, Bertrand

The law of contradiction does not apply in-the-lived-experienced-world.

From Humanistic Nursing by Paterson, Josephine G.

The belief in the law of contradiction is a belief about things, not only about thoughts.

From The Problems of Philosophy by Russell, Bertrand

For example, the law of contradiction states that nothing can both have a certain property and not have it.

From The Problems of Philosophy by Russell, Bertrand