All that matters is love and work.

Knowledge is the intellectual manipulation of carefully verified observations.

The psychic development of the individual is a short repetition of the course of development of the race.

A string of reproaches against other people leads one to suspect the existence of a string of self-reproaches with the same content.

The interpretation of dreams is the royal road to a knowledge of the unconscious activities of the mind.

Plaque was placed on 6 May 1977 at Bellevue (a house on the slopes of the Wienerwald) where the Freud family spent their summers.

We have long observed that every neurosis has the result, and therefore probably the purpose, of forcing the patient out of real life, of alienating him from actuality.