The moment a man questions the meaning and value of life, he is sick, since objectively neither has any existence; by asking this question one is merely admitting to a store of unsatisfied libido to which something else must have happened, a kind of fermentation leading to sadness and depression.
Sigmund FreudIt is easy to see that the ego is that part of the id which has been modified by the direct influence of the external world.
Sigmund FreudThe interpretation of dreams is the royal road to a knowledge of the unconscious activities of the mind.
Sigmund Freud