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Noam Chomsky (1928–)

Chomsky founded generative linguistics and was a principal architect of the cognitive revolution. His central move was to treat language not as a cultural artefact or a set of learned habits but as a biological property of the human mind — a species-specific faculty, studied as part of cognitive psychology and ultimately biology. Around this he built generative grammar, the argument from the poverty of the stimulus to an innate language faculty, and the theory of universal grammar. Alongside the science he has pursued, for sixty years and by his own insistence separately, a career as a political dissident.

Avram Noam Chomsky (1928–) was born in Philadelphia into a Jewish intellectual household — his father a Hebrew scholar — and was drawn early to anarchist and socialist thought. He studied linguistics at the University of Pennsylvania under Zellig Harris, the leading American structuralist, whose distributional methods he would come to reject as inadequate to human language. After a fellowship at Harvard’s Society of Fellows he joined MIT in 1955, his institutional home ever since (Institute Professor; the linguistics department grew up around his work). He has remained active into his nineties, the scientific and political tracks of his life run in parallel throughout.

Generative linguistics

Language as a property of mind. Chomsky’s founding reframing was cognitive and biological: a language is not behaviour to be catalogued but a system of knowledge in the mind/brain, a biological endowment specific to the species. This shifted linguistics from the descriptive study of language behaviour toward a science of the mental faculty underlying it.

Generative grammar. The cornerstone, set out in Syntactic Structures (1957): a grammar is a finite system of rules that generates the infinite set of grammatical sentences of a language, capturing the speaker’s tacit knowledge. Because the system is finite but its output unbounded, it explains how speakers produce and understand endlessly many novel sentences — something no list of memorised utterances could do. Early on this took the form of transformational grammar, deriving surface sentences from more abstract underlying structures.

Competence and performance. Chomsky distinguished competence — the speaker’s systematic, idealised knowledge of the language — from performance, actual use with its hesitations and errors. Linguistics, on his account, studies competence.

The poverty of the stimulus. His central argument for innateness: the language a child hears is fragmentary and contains no grammar lessons, yet every normal child acquires a complex, productive grammar in a few years. The gap between the thin input and the rich result implies that much of the language faculty is innate — the child comes equipped with a species-specific endowment that constrains and guides acquisition. This was the decisive break with the empiricist and behaviourist account of language as conditioned habit, and it founded the research programme of nativism, where the argument’s cases, its critics, and the disputes among nativists themselves are set out.

Universal grammar. From this follows universal grammar — the innate faculty common to the species, the initial state of the language organ. Its mature form, the Principles and Parameters model of the 1980s, holds that all languages obey deep universal principles while differing in the settings of a limited set of parameters fixed by exposure — explaining cross-linguistic variation within a single universal frame.

The changing frameworks. Chomsky has revised his theory repeatedly: the Standard Theory of Aspects of the Theory of Syntax (1965), Government and Binding (1981), and from the 1990s the Minimalist Program, which seeks the sparest possible account of the language faculty, built on the single combinatorial operation Merge and the conjecture that language is a near-optimal solution to the conditions imposed by the systems it interfaces with.

The lexicon and the origin of the faculty. Two positions of his later work sit apart from the syntactic theory. He holds that lexical concepts are too complex to have been drawn from experience and so must in substance already be present, triggered rather than learned — extending the claim even to words like carburetor — a view that goes further than most nativists follow. And with Robert Berwick (Why Only Us, 2016) he argues that the faculty arose suddenly rather than gradually, through a chance rewiring, and that language is primarily an instrument of thought with communication a secondary use — a position contested by nativists who hold grammar to be a gradual adaptation for communication. Both disputes are taken up on the nativism page.

The Chomsky hierarchy. His work in formal language theory — the Chomsky hierarchy classifying formal languages (regular, context-free, context-sensitive, recursively enumerable) by generative power — became foundational to theoretical computer science and the theory of computation, a reach well beyond linguistics.

The cognitive revolution and philosophy of mind

Chomsky is a principal architect of the cognitive revolution — the displacement of behaviourism as psychology’s dominant framework and the return of mind, internal representation, and mental structure as proper objects of science. His 1959 review of B.F. Skinner’s Verbal Behavior argued that operant conditioning could not account for the speed, productivity, and creativity of language acquisition, and is widely taken as a turning point in the decline of behaviourism; it is best understood as one decisive node in that larger shift rather than its whole.

He has been explicit in reviving rationalist and nativist themes against empiricism. Cartesian Linguistics (1966) traces a lineage from Descartes and the Port-Royal grammarians through Humboldt — thinkers for whom language reveals the structure of mind — and recovers their “creative aspect of language use” as rooted in an innate rule system. He has engaged the major philosophers of his era: Quine on meaning and the indeterminacy of translation, Jean Piaget in the 1975 Royaumont debate on innateness versus developmental construction, and Putnam, Goodman, and Dennett on mind and meaning. On the mind-body problem he is deflationary — arguing that the “body” half dissolved once physics outgrew classical mechanics — and he distinguishes problems, which science can solve, from mysteries such as consciousness, which may lie beyond it; he is sceptical of strong AI while remaining naturalistic.

The politics

For six decades Chomsky has pursued a serious anarchist and libertarian-socialist politics — not a sideline but a sustained engagement, which he nonetheless insists is separate from his science, motivated by different concerns and not derived from a common theory. It emerged publicly with “The Responsibility of Intellectuals” (1967), arguing that scholars have a duty to contest state falsehood; he became a leading opponent of the Vietnam War, was arrested repeatedly, and was placed on Nixon’s enemies list. Manufacturing Consent (1988, with Edward Herman) advanced a propaganda model of the media: a formally free press, structured by ownership, advertising, and reliance on official sources, that systematically frames the news to suit elite interests. His writing has ranged across US foreign policy in Central America, Southeast Asia, and the Middle East, and he has been a prominent advocate for Palestinian and East Timorese causes. The political work reached an enormous audience, but the spine of his thought is the linguistics.

Contested questions

Chomsky is foundational and contested in equal measure. Within linguistics, the generative-semantics wars of the 1960s–70s split his own movement; Daniel Everett has argued from the Pirahã language that recursion is not universal, against Chomsky’s claim that it is; and the Minimalist Program has its own critics. The wider argument his work provoked — the usage-based and construction challenges to the autonomy of syntax, the connectionist objection to symbolic rules, the disputed empirical status of universal grammar, and the disagreements among nativists over concepts and evolution — is the subject of nativism, the research programme he founded, and is set out there rather than here. In politics he is both celebrated and reviled: his defence of Robert Faurisson’s free-speech rights (while repudiating Faurisson’s Holocaust denial) drew intense criticism, and his accounts of US foreign policy are rejected by opponents as one-sided. The foundational influence and the sustained controversy both belong to any honest account.

Key works

See also: Nativism · Skinner · Behaviourism · Tomasello · Quine · Descartes · Dennett