Book excerpt: Several distinct general linguistic theories are represented here: autolexical theory, categorial grammar, functional grammar, and government and binding syntax. Each essay in this book is centered around a point of morphological theory and each one is designed to further the development of that theory and hence linguistic theory in general. Many different languages are analyzed: Sino-Tibetan Manipuri, Eskimo Central Siberian Upik, Athabaskan Ahtna, Latin, modern European languages, and English. All of these sometimes dramatically different language systems are treated as manifestations of a single unified human language faculty, and these studies of generative morphology are incorporated into linguistic theory and the explanation of diversity in human language.