Because psychoanalysis emerged as a medical specialty concerned with the healing of the sick, it focused its attention on the pathological processes arising from the disruption of the adaptive capacities, and this subject matter was taken to be the totality of significant information concerning the structure of the personality. The diagnosis and treatment of mental illness is, however, a poor basis for the empiricism which a basic science requires. Mental illness, when it is seen in terms of the symptoms and syndromes which come to the attention of the psychotherapist, presents a picture of the personality which is readily fragmented and distorted out of proportion.