Morton Prince,
The unconscious
(1921)
“ A study of the psychogenesis of a concrete case will on the one hand illustrate these principles and, on the other, the structure and dynamics of normal personality.Before making such a study, however, we ought to have a working conception of the normal; and this we are entitled, from the point of view of dynamic psychology, to construct on the basis of data supplied by studies of abnormal and normal mental behavior. The older way of considering human personality was to conceive it as an “ego” with various faculties. ”
