New in paperback. Hardcover was published in 2022. This book explores the relationship between universal grammar - the theory that we have an innate mechanism for generating sentences - and iconicity - the resemblance between form and meaning in language. It offers a new theory of their interactions, 'UG-iconicity interface' (UG-I), which shows that not only do universal grammar and iconicity coexist, but in fact collaborate in intricate and predictable ways.