Over the past twenty-five years, Ray Jackendoff has investigated many complex issues in syntax, semantics, and the relation of language to other cognitive domains. He steps back in this new book to survey the broader theoretical landscape in linguistics, in an attempt to identify some of the sources of the widely perceived malaise with respect to much current theorizing. Starting from the 'Minimalist' necessity for interfaces of the grammar with sound, meaning, and the lexicon, Jackendoff examines many standard assumptions of generative grammar that in retrospect may be seen as the product of historical accident. He then develops alternatives more congenial to contemporary understanding of linguistic phenomena. The Architecture of the Language Faculty seeks to situate the language capacity in a more general theory of mental representations and to connect the theory of grammar with processing. To this end, Jackendoff works out an architecture that generates multiple co-constraining structures, and he embeds this proposal in a version of the modularity hypothesis called Representational Modularity.