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

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.

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.

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

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

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.

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