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.

---

Example Sentences

Thesis, antithesis and synthesis, a Fichtean formula, is generalized by Hegel into the perpetual law of thought.

From Project Gutenberg

The law of Causality is the most important law of thought, after that of Identity.

From Project Gutenberg

But since I used the phrase “laws of thought,” the mistress perhaps supposed that a “law of thought” has something to do with thinking and seemed to imagine that I wished to impute to the maid some moral defect of an unimportant nature.

From Project Gutenberg

These eminent mathematicians were anticipated by the empirical philosopher who would not pronounce that the “law of thought” that A is either in the place B or not is true until he had looked to make sure.

From Project Gutenberg

Consequently, it established as the first law of thought the Principle of Identity, which runs as follows: A = A, i.e., each thing, each being, is like itself; it possesses an individuality of its own, peculiar to itself.

From Project Gutenberg