 According to Caponigro (forthcoming), Montague’s interest in the field arose when preparing a seminar on the philosophy of language as a visiting professor in Amsterdam in 1966. Only a couple of years earlier, he had deemed the “systematic exploration of the English language, indeed of what might be called the ‘logic of ordinary English’, […] either extremely laborious or impossible” and did ‘not find it rewarding’ (Montague and Kalish 1964, 10). Yet he appears to have changed his mind after perusing Quine’s (1960) Word and Object as well as Chomsky’s (1965) Aspects of the Theory of Syntax: the latter opened the perspective of treating the syntax of natural language as a formal system but failed to provide any serious analysis of linguistic meaning; the former offered a systematic connection between traditional grammar and formal logic – and much more systematically so than contemporary logic texts. In fact, Montague’s semantic work owes a lot to Quine’s descriptive insights into the ‘logic of ordinary English’, but differs from his predecessor by making the connection between language and logic in rigorous, mathematical terms: