like a contagion, just as the taboo is transferred from a person to an object, and from this to another.
If the violation of a taboo can be condoned through expiation or penance, which means, of course, a renunciation of a possession or a liberty, we have the proof that the observance of a taboo regulation was itself a renunciation of something really wished for. The omission of one renunciation is cancelled through a renunciation at some other point. This would lead us to conclude that, as far as taboo ceremonials are concerned, penance is more primitive than purification.
Let us now summarize what understanding we have gained of taboo through its comparison with the compulsive prohibition of the neurotic. Taboo is a very primitive prohibition imposed from without (by an authority) and directed against the strongest desires of man. The desire to violate it continues in the unconscious; persons who obey the taboo have an ambivalent feeling toward what is affected by the taboo. The magic power attributed to taboo goes back to its ability to lead man into temptation; it behaves like a contagion, because the example is contagious, and because the prohibited desire becomes displacing in the unconscious upon something else. The expiation for the violation of a taboo through a renunciation proves that a renun-
