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

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

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

Not purpose but chance is at the heart of mental life.

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

The main source of psychopathic diseases is the fundamental instinct of fear with its manifestations, the feeling of anxiety, anguish, and worry.