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 FreudIt is easy to see that the ego is that part of the id which has been modified by the direct influence of the external world.
Sigmund FreudAdolescent stage in the development of the human race from which humanity should free itself.
Sigmund Freud