The mind is like an iceberg, it floats with one-seventh of its bulk above water.

A transference neurosis corresponds to a conflict between ego and id, a narcissistic neurosis corresponds to that between between ego and super-ego, and a psychosis to that between ego and outer world.

As regards intellectual work it remains a fact, indeed, that great decisions in the realm of thought and momentous discoveries and solutions of problems are only possible to an individual, working in solitude.

No, our science is no illusion. But an illusion it would be to suppose that what science cannot give us we can get elsewhere.

Love is a state of temporary psychosis.

The fateful question for the human species seems to me to be whether and to what extent their cultural development will succeed in mastering the disturbance of their communal life by the human instinct of aggression and self-destruction ... One thing only do I know for certain and that is that man's judgements of value follow directly from his wihes for happiness-that, accordingly, they are an attempt to support his illusions with arguments.

Most people do not really want freedom, because freedom involves responsibility, and most people are frightened of responsibility.