Noam Chomsky , in 'Aspects of the Theory of Syntax', said that grammars of particular languages "are supplemented by [an innate] universal grammar that accomodates the creative aspect of language use and expresses the deep-seated regularities which, being universal, are omitted from the [particular] grammar itself". The universal aspects of "the linquistic intuition--the tacit competence--of the native speaker" he called 'generative grammar'.