The behavior of a human being in sexual matters is often a prototype for the whole of his other modes of reaction in life.
Sigmund FreudThe poor ego has a still harder time of it; it has to serve three harsh masters, and it has to do its best to reconcile the claims and demands of all three...The three tyrants are the external world, the superego, and the id.
Sigmund FreudExperience teaches that for most people there is a limit beyond which their constitution cannot comply with the demands of civilization. All who wish to reach a higher standard than their constitution will allow, fall victims to neurosis. It would have been better for them if they could have remained less "perfect".
Sigmund Freud