Not purpose but chance is at the heart of mental life.
Self-preservation is the central aim of all life-activities.
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.
It is time that the medical and teaching profession should realize that functional neurosis is not congenital, not inborn, not hereditary, but is the result of a defective, fear-inspiring education in early child life.
If ceaseless vigilance is the price of liberty, more so is it true that ceaseless criticism of ever new opinions and ever new views, however distasteful, bizarre, and paradoxical, is the price of truth.
If society is to progress on a truly humanistic basis, without being subject to mental epidemics and virulent social diseases to which the subconscious falls an easy victim, the personal consciousness of every individual should be cultivated to the highest degree possible.
The principle of recognition of evil under all its guises is at the basis of the true education of man.
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.
Science is the description of phenomena and the formulation of their relations.
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.
The psycho-physiological hypothesis is both inductively and deductively the sine qua non of the science of psychology.
It is not the citizen, or a taxpayer, or voter, or office-holder, but the cultivated, free individual who is the true aim of all social progress.
The main source of psychopathic diseases is the fundamental instinct of fear with its manifestations, the feeling of anxiety, anguish, and worry.
Mental synthesis of psychic content in the unity of a moment-consciousness is a fundamental principle of psychology.
Greatness of individuality is inversely proportional to the mass of the social aggregate.