"Colorless green ideas sleep furiously" is a sentence composed by Noam Chomsky in his 1957 Syntactic Structures as an example of a sentence that is grammatically correct (logical form) but semantically nonsensical. The term was originally used in his 1955 thesis "Logical Structures of Linguistic Theory". Although the sentence is grammatically correct, no obvious understandable meaning can be derived from it, and thus it demonstrates the distinction between syntax and semantics. As an example of a category mistake, it was used to show inadequacy of the then-popular probabilistic models of grammar, and the need for more structured models.
Read more about Colorless Green Ideas Sleep Furiously: Details, Attempts At Meaningful Interpretations, Statistical Challenges, Related and Similar Examples
Famous quotes containing the words green, ideas and/or sleep:
“Hermann and Humbert are alike only in the sense that two dragons painted by the same artist at different periods of his life resemble each other. Both are neurotic scoundrels, yet there is a green lane in Paradise where Humbert is permitted to wander at dusk once a year; but Hell shall never parole Hermann.”
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“Go back to sleep now
Frank, and I may leave a tiny poem
in that brain of yours as my farewell.’”
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