Not purpose but chance is at the heart of mental life.

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

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

If society is to progress on a truly humanistic basis, without being subject to mental epidemics and virulent social diseases to which the subconscious falls an easy victim, the personal consciousness of every individual should be cultivated to the highest degree possible.

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

Not purpose but chance is at the heart of mental life.

Psychology is the science of psychic states both as to content and form, regarded from an objective standpoint, and brought in relation to the living corporeal individual.