89:1.2

The respect which these prohibitions commanded in the mind of the savage exactly equaled his fear of the powers who were supposed to enforce them. Taboos first arose because of chance experience with ill luck; later they were proposed by chiefs and shamans—fetish men who were thought to be directed by a spirit ghost, even by a god. The fear of spirit retribution is so great in the mind of a primitive that he sometimes dies of fright when he has violated a taboo, and this dramatic episode enormously strengthens the hold of the taboo on the minds of the survivors.