Taboo restrictions are distinct from religious or moral prohibitions. They are not based upon any divine ordinance, but may be said to impose themselves on their own account. They differ from moral prohibitions in that they fall into no system that declares quite generally that certain abstinences must be observed and gives reasons for that necessity.
Sigmund FreudHumanity is in the highest degree irrational, so that there is no prospect of influencing it by reasonable arguments. Against prejudice one can do nothing.
Sigmund FreudOne must not be mean with affections; what is spent of the funds is renewed in the spending itself. Left untouched for too long, they diminish imperceptibly or the lock gets rusty; they are there all right but one cannot make use of them.
Sigmund FreudI take up the standpoint that the tendency to aggression is an innate, independent, instinctual disposition in man, and I come back now to the statement that it constitutes the most powerful obstacle to culture.
Sigmund FreudI no longer believe that William Shakespeare the actor from Stratford was the author of the works that have been ascribed to him.
Sigmund FreudAgainst the suffering which may come upon one from human relationships the readiest safeguard is voluntary isolation, keeping oneself aloof from other people. The happiness which can be achieved along this path is, as we see, the happiness of quietness. Against the dreaded external world one can only defend oneself by some kind of turning away from it, if one intends to solve the task by oneself.
Sigmund Freud