Freud seems to have been at times lax in his nosology and confused in his use of terms and concepts, accepting the labels and loose thinking of his teachers and contemporaries. Such confusion and carelessness were however more apparent than real. His concern was not with the names of processes nor with their alleged 'seat' in the brain. It was rather with what was going on in the individual and how it was going on. Psychopathology must have appeared to him an endless series of degrees of integration of personality. He believed firmly that transmutation occurs in clinical syndromes.