In this long and complicated paper, the author examines fantasy material, grouped into broad categories according to degree of structural cohesiveness, from a large group of persons of all ages and psychiatric diagnoses. Materials used are dreams, drawings, and fantasies, both in the waking state and under light gas anesthesia. The group was divided into three categories: schizophrenias, character disorders, and neuroses. What emerged was the expected fact that the degree of regressive features of the fantasy material varied directly with the seriousness of the illness, that is, greater in schizophrenia than in neurosis. From this the author postulates a dream profile as a handy diagnostic test for clinicians.