Roazen contends that while Erikson has succeeded in revitalizing the Freudian tradition, "we would repay him poorly as a teacher if we allowed him to be loosely understood or inadequately challenged." This examination of Erikson's contributions - among them the concepts of identity and the life cycle and the discipline of psychohistory - revisits Freud in light of Erikson and Erikson in terms of Freud. Dr.