The fact that psychology postulates an external material world and studies it in so far as it comes to be reflected in consciousness, points to another postulate which psychology must assume in addition, namely, the existence of an inner world consciousness.

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

The fact that psychology postulates an external material world and studies it in so far as it comes to be reflected in consciousness, points to another postulate which psychology must assume in addition, namely, the existence of an inner world consciousness.

Social laughter is momentary, soon burns itself out and passes away like the fire and smokes of straw, but genius shakes the very skies with its lasting, inextinguishable laughter.

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

The course of evolution is to a greater integration of similarly functioning ganglia.

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