The main source of psychopathic diseases is the fundamental instinct of fear with its manifestations, the feeling of anxiety, anguish, and worry.

The principle of recognition of evil under all its guises is at the basis of the true education of man.

Superstitions, and especially the early cultivation of religion, with its "fear of the Lord" and of unknown mysterious agencies, are especially potent in the development of the instinct of fear. Even the early cultivation of morality and conscientiousness, with their fears of right and wrong, often causes psychoneurotic states in later life. Religious, social, and moral taboos and superstitions, associated with apprehension of threatening impending evil, based on the fear instinct, form the germs of psychopathic affections.

The man of genius whether as artist or thinker requires a mass of accidental variations to select from and a rigidly selective process of attention.

Psychology must postulate uniformity of interrelation of physical, physiological, and psychic processes.

The main source of psychopathic diseases is the fundamental instinct of fear with its manifestations, the feeling of anxiety, anguish, and worry.

Self-preservation is the central aim of all life-activities.