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

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 man of genius whether as artist or thinker requires a mass of accidental variations to select from and a rigidly selective process of attention.

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

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

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

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