Taboo is a Polynesian word, the translation of which provides difficulties for us because we no longer possess the idea which it connotes. It was still current with the ancient Romans: their word ‘sacer’ was the same as the taboo of the Polynesians. The [Greek: ἁγος hagos] of the Greeks and the Kodaush of the Hebrews must also have signified the same thing which the Polynesians express through their word taboo and what many races in America, Africa (Madagascar), North and Central Asia express through analogous designations. For us the meaning of taboo branches off into two opposite directions. On the one hand it means to us sacred, consecrated: but on the other hand it means, uncanny, dangerous, forbidden, and unclean. The opposite for taboo is designated in Polynesian by the word _noa_ and signifies something ordinary and generally accessible. Thus something like the concept of reserve inheres in taboo; taboo expresses itself essentially in prohibitions and restrictions. Our combination of ‘holy dread’ would often express the meaning of taboo. The taboo restrictions are different from religious or moral prohibitions. They are not traced to a commandment of a god but really they themselves impose their own prohibitions; they are differentiated from moral prohibitions by failing to be included in a system which declares abstinences in general to be necessary and gives reasons for this necessity. The taboo prohibitions lack all justification and are of unknown origin. Though incomprehensible to us they are taken as a matter of course by those who are under their dominance. Wundt[32] calls taboo the oldest unwritten code of law of humanity. It is generally assumed that taboo is older than the gods and goes back to the pre-religious age. As we are in need of an impartial presentation of the subject of taboo before subjecting it to psychoanalytic consideration I shall now cite an excerpt from the article _Taboo_ in the _Encyclopedia Britannica_ written by the anthropologist Northcote W. Thomas[33]: “Properly speaking taboo includes only (a) the sacred (or unclean) character of persons or things, (b) the kind of prohibition which results from this character, and (c) the sanctity (or uncleanliness) which results from a violation of the prohibition. The converse of taboo in Polynesia is ‘noa’ and allied forms which mean ‘general’ or ‘common’ ...