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.

Mental synthesis of psychic content in the unity of a moment-consciousness is a fundamental principle of psychology.

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.

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

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

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.

The psycho-physiological hypothesis is both inductively and deductively the sine qua non of the science of psychology.