The oldest and most important taboo prohibitions are the two basic laws of totemism: namely not to kill the totem animal, and to avoid sexual intercourse with totem companions of the other sex.

It would therefore seem that these must have been the oldest and strongest desires of mankind. We cannot understand this and therefore we cannot use these examples to test our assumptions as long as the meaning and the origin of the totemic system is so wholly unknown to us. But the very wording of these taboos and the fact that they occur together will remind any one who knows the results of the psychoanalytic investigation of individuals, of something quite definite which psychoanalysts call the central point of the infantile wish life and the nucleus of the later neurosis[44].

All other varieties of taboo phenomena which have led to the attempted classifications noted above become unified if we sum them up in the following sentence. The basis of taboo is a forbidden action for which there exists a strong inclination in the unconscious.

We know, without understanding it, that whoever does what is prohibited and violates the taboo, becomes himself taboo. But how can we connect this fact with the other, namely that the taboo adheres not only to persons who have done what is prohibited but also to persons who are in exceptional circumstances, to these circumstances themselves, and to impersonal things? What can this dangerous attribute be which always remains the same under all these different conditions? Only one thing, namely, the propensity to arouse the ambivalence of man and to tempt him to violate the prohibition.

An individual who has violated a taboo becomes himself taboo because he has the dangerous property of tempting others to follow his example. He arouses envy; why should he be allowed to do what is prohibited to others? He is therefore really contagious, in so far as every example incites to imitation and therefore he himself must be avoided.

But a person may become permanently or temporarily taboo without having violated any taboos, for the simple reason that he is in a condition which has the property of inciting the forbidden desires of others and of awakening the ambivalent conflict in them. Most of the exceptional positions and conditions have this character and possess this dangerous power. The king or chieftain rouses envy of his prerogatives; everybody would perhaps like to be king. The dead, the newly born, and women when they are incapacitated all act as incitements on account of their peculiar helplessness, while the individual who has just reached sexual maturity tempts through the promise of a new pleasure. Therefore all these persons and all these conditions are taboo, for one must not yield to the temptations which they offer.

Now, too, we understand why the forces inherent in the ‘mana’ of various persons can neutralize one another so that the mana of one individual can partly cancel that of the other. The taboo of a king is too strong for his subject because the social difference between them is too great. But a minister, for example, can become the harmless mediator between them. Translated from the language of taboo into the language of normal psychology this means: the subject who shrinks from the tremendous temptation which contact with the king creates for him can brook the intercourse of an official, whom he does not have to envy so much and whose position perhaps seems attainable to him. The minister, on his part, can moderate his envy of the king by taking into consideration the power that has been granted to him. Thus smaller differences in the magic power that lead to temptation are less to be feared than exceptionally big differences.

It is equally clear how the violation of certain taboo prohibitions becomes a social danger which must be punished or expiated by all the members of society lest it harm them all. This danger really exists if we substitute the known impulses for the unconscious desires. It consists in the possibility of imitation, as a result of which society would soon be dissolved. If the others did not punish the violation they would perforce become aware that they want to imitate the evil doer.

Though the secret meaning of a taboo prohibition cannot possibly be of so special a nature as in the case of a neurosis, we must not be astonished to find that touching plays a similar rôle in taboo prohibition as in the délire de toucher. To touch is the beginning of every act of possession, of every attempt to make use of a person or thing.

We have interpreted the power of contagion which inheres in the taboo as the property of leading into temptation, and of inciting to imitation. This does not seem to be in accord with the fact that the contagiousness of the taboo is above all manifested in the transference to objects which thus themselves become carriers of the taboo.