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

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

Science is the description of phenomena and the formulation of their relations.

The recognition, the diagnosis, and the preservation of psychopathic individuals account for the apparent increase of neurotics in civilized communities.

The general tendency of evolution is from structure to function, from bondage to freedom of the individual elements.

Suggestibility varies as the amount of disaggregation, and inversely as the unification of consciousness.

Human institutions depend for their existence and stability on the impulse of self-preservation and its close associate, - the fear instinct.