The psychical, whatever its nature may be, is itself unconscious.

The behavior of a human being in sexual matters is often a prototype for the whole of his other modes of reaction in life.

Maturity is the ability to postpone gratification.

Free sexual intercourse between young males and respectable girls" was urgently necessary or society was "doomed to fall a victim to incurable neuroses which reduce the enjoyment of life to a minimum, destroy the marriage relation and bring hereditary ruin on the whole coming generation.

Neurosis is the result of a conflict between the ego and its id, whereas psychosis is the analogous outcome of a similar disturbance in the relation between the ego and the external world.

The dream is the liberation of the spirit from the pressure of external nature, a detachment of the soul from the fetters of matter.

What a distressing contrast there is between the radiant intelligence of the child and the feeble mentality of the average adult.