A few photographic portraits of famed psychologist Carl Ransom Rogers. Carl Ransom Rogers (1902-1987) was a psychologist and psychotherapist who initiated what Abraham Maslow later called the "third force" of psychology, following the behaviorism of Pavlov (and later B. F. Skinner) and Freudian psychoanalysis. This "third force" of humanistic psychology has been so closely identified with Rogers that it is often called Rogerian, a term its namesake objected to. His innovation was to treat clients as if they were essentially healthy, and he felt that growth would occur when a non-judgmental, non-directive (later, "client-centered") therapist created a warm, accepting environment to nurture the client and allow self-knowledge and self-acceptance to occur. Rogers is considered by many to be the most influential psychologist after Freud.