The author provides a very lucid description of Fairbairn's principal work as follows: 1, theory of universality of object-relationships; 2, theory of the schizoid position; and 3, theory of dynamic structure: the mind as three egos. Wisdom then discusses the over-all theory, arriving at the following conclusions: Fairbairn's most important contributions relate to the dominant role of schizoid mechanisms, the primacy of object relationships, and the ingredients of the ego. In the opinion of the author, all seem likely to become permanent parts of psychoanalytic theory. He is less impressed with Fairbairn's rejection of primacy of aggression, his view of the nature of first objects in infantile experience, and the absolute independence of impersonal roots that he attributes to the ego. He feels that even without these concepts one could concede the primacy of object relationships.