We now arrive at that which constitutes the very heart of the doctrine.
Wherever this idea of a double may come from, it is not sufficient, according to the avowal of the animists themselves, to explain the formation of the cult of the ancestors which they would make the initial type of all religions. If this double is to become the object of a cult, it must cease to be a simple reproduction of the individual, and must acquire the characteristics necessary to put it in the rank of sacred beings. It is death, they say, which performs this transformation. But whence comes the virtue which they attribute to this? Even were the analogy of sleep and death sufficient to make one believe that the soul survives the body (and there are reservations to be made on this point), why does this soul, by the mere fact that it is now detached from the organism, so completely change its nature? If it was only a profane thing, a wandering vital principle, during life, how does it become a sacred thing all at once, and the object of religious sentiments? Death adds nothing essential to it, except a greater liberty of movement. Being no longer attached to a special residence, from now on, it can do at any time what it formerly did only by night; but the action of which it is capable is always of the same sort. Then why have the living considered this uprooted and vagabond double of their former companion as anything more than an equal? It was a fellow-creature, whose approach might be inconvenient; it was not a divinity.[114]
It seems as though death ought to have the effect of weakening vital energies, instead of strengthening them. It is, in fact, a very common belief in the inferior societies that the soul participates actively in the life of the body. If the body is wounded, it is wounded itself and in a corresponding place. Then it should grow old along with the body. In fact, there are peoples who do not render funeral honours to men arrived at senility; they are treated as if their souls also had become senile.[115] It even happens that they regularly put to death, before they arrive at old age, certain privileged persons, such as kings or priests, who are supposed to be the possessors of powerful spirits whose protection the community wishes to keep. They thus seek to keep the spirit from being affected by the physical decadence of its momentary keepers; with this end in view, they take it from the organism where it resides before age can have weakened it, and they transport it, while it has as yet lost nothing of its vigour, into a younger body where it will be able to keep its vitality intact.[116] So when death results from sickness or old age, it seems as though the soul could retain only a diminished power; and if it is only its double, it is difficult to see how it could survive at all, after the body is once definitely dissolved. From this point of view, the idea of survival is intelligible only with great difficulty. There is a logical and psychological gap between the idea of a double at liberty and that of a spirit to which a cult is addressed.