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 tendency of life is not the preservation of the species, but solely the preservation of each individual organism, as long as it is in existence at all, and is able to carry on its life processes.

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

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

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

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

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.