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 FreudIncidentally, why was it that none of all the pious ever discovered psycho-analysis? Why did it have to wait for a completely godless Jew?
Sigmund FreudWhat progress we are making. In the Middle Ages they would have burned me. Now they are content with burning my books.
Sigmund Freud