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

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

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

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.

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