Sapir was skillfull at analyzing unwritten languages on the basis of his own fieldwork. He contributed significantly to the mapping of languages and cultures of native America.

Edward Sapir was one of those men, rare among scientists and scholars, who are spoken of by their colleagues in terms of genius. His writings on frontier problems in cultural anthropology, psychology, and linguistics are outstanding for their provocative insights and remarkable control of factual data. His long essay on language, his principal field of study, is an illuminating exploration of various aspects of the subject. His stress on the fact that language is a cultural or social product helped to make linguistics an integral part of the study of man. The interplay of culture and personality was a field where Sapir was a pioneer and many of his essays have become classics in the social sciences. The nine contributions brought together in this volume well show the distinction and lasting quality of Sapir's work. They include "Culture, Genuine and Spurious," "The Meaning of Religion," "Language," "Cultural Anthropology and Psychiatry," and "The Statue of Linguistics as a Science."