law of thought

American  

noun

1. any of the three basic laws of traditional logic: the law of contradiction, the law of excluded middle, and the law of identity.

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Example Sentences

And, in the same way, scientific principles are of the nature of postulates, whose justification is no necessary law of thought, but must rather be sought in the results of scientific investigation.

From Recent Tendencies in Ethics by Sorley, William Ritchie

Intentionality, principle of, 190; denied by Materialists, 194; a first law of thought, 221-223; recognized by Socrates, 320-324.

From Christianity and Greek Philosophy or, the relation between spontaneous and reflective thought in Greece and the positive teaching of Christ and His Apostles by Cocker, B. F. (Benjamin Franklin)

He began with George, but, George having suggested Tom and Miss Somerby, by the same law of thought each of them would have suggested two others.

From How to Do It by Hale, Edward Everett

But "Ex nihilo nihil" is a universal law of thought.

From Christianity and Greek Philosophy or, the relation between spontaneous and reflective thought in Greece and the positive teaching of Christ and His Apostles by Cocker, B. F. (Benjamin Franklin)

Science, in its progress, is gradually substituting one category for the other, and every one of these categories is at once a law of thought and a law of things as known.

From Browning as a Philosophical and Religious Teacher by Jones, Henry, Sir