The extent to which language is inseparable from thought has long been a major subject of debate across linguistics, psychology, philosophy and other disciplines. In this study, Wallace Chafe presents a thought-based theory of language that goes beyond traditional views that semantics, syntax, and sounds are sufficient to account for language design. Language begins with thoughts in the mind of a speaker and ends by affecting thoughts in the mind of a listener. This obvious observation is seldom incorporated in descriptions of language design for two major reasons. First, the role of thought is usually usurped by semantics. But semantic structures are imposed on thought by languages and differ from one language to another. Second, thought does not lend itself to familiar methods of linguistic analysis. Chafe suggests ways of describing thoughts, traces the path languages follow from thoughts to sounds, and explores ways in which thoughts are oriented in time, memory, imagination, reality, and emotions.

Wallace Chafe demonstrates how the study of language and consciousness together can provide an unexpectedly broad understanding of the way the mind works. Relying on analyses of conversational speech, written fiction and nonfiction, the North American Indian language Seneca, and the music of Mozart and of the Seneca people, he investigates both the flow of ideas through consciousness and the displacement of consciousness by way of memory and imagination. Chafe draws on several decades of research to demonstrate that understanding the nature of consciousness is essential to understanding many topics of linguistic importance, such as anaphora, tense, clause structure, and intonation, as well as stylistic usages such as the historical present and free indirect style. This book offers a comprehensive picture of the dynamic natures of language and consciousness for linguists, psychologists, literary scholars, computer scientists, anthropologists, and philosophers.