The direct influence of... «Linguistics: A Very Short Introduction »
The direct influence of Saussure (see box in the last chapter) was increasingly replaced by that of Chomsky from the 1960s onwards. His first book, Syntactic Structures (1957), was already famous for his concept of a ‘generative grammar’, as a set of rules for what is ‘grammatical’ in a language; also for a ‘transformational grammar’, as one kind of grammar in that sense.
His most important idea, however, is that basic properties of language are determined by our genes.