One cannot be deeply responsive to the world without being saddened very often.

Human history began with an act of disobedience, and it is not unlikely that it will be terminated by an act of obedience.

Psychoanalysis, which interprets the human being as a socialized being, and the psychic apparatus as essentially developed and determined through the relationship of the individual to society, must consider it a duty to participate in the investigation of sociological problems to the extent the human being or his/her psyche plays any part at all.

The application of psychoanalysis to sociology must definitely guard against the mistake of wanting to give psychoanalytic answers where economic, technical, or political facts provide the real and sufficient explanation of sociological questions. On the other hand, the psychoanalyst must emphasize that the subject of sociology, society, in reality consists of individuals, and that it is these human beings, rather than abstract society as such, whose actions, thoughts, and feelings are the object of sociological research.