That the anthropomorphic instinct, with which the animists have endowed primitive men, cannot explain their mental condition is shown by the nature of the confusions of which they are guilty. In fact, these do not come from the fact that men have immoderately extended the human kingdom to the point of making all the others enter into it, but from the fact that they confound the most disparate kingdoms. They have not conceived the world in their own image any more than they have conceived themselves in the world's image: they have done both at the same time. Into the idea they have formed of things, they have undoubtedly made human elements enter; but into the idea they have formed of themselves, they have made enter elements coming from things.
Yet there is nothing in experience which could suggest these connections and confusions. As far as the observation of the senses is able to go, everything is different and disconnected. Nowhere do we really see beings mixing their natures and metamorphosing themselves into each other. It is therefore necessary that some exceptionally powerful cause should have intervened to transfigure reality in such a way as to make it appear under an aspect that is not really its own.
It is religion that was the agent of this transfiguration; it is religious beliefs that have substituted for the world, as it is perceived by the senses, another different one. This is well shown by the case of totemism. The fundamental thing in this religion is that the men of the clan and the different beings whose form the totemic emblems reproduce pass as being made of the same essence. Now when this belief was once admitted, the bridge between the different kingdoms was already built. The man was represented as a sort of animal or plant; the plants and animals were thought of as the relatives of men, or rather, all these beings, so different for the senses, were thought of as participating in a single nature. So this remarkable aptitude for confusing things that seem to be obviously distinct comes from the fact that the first forces with which the human intellect has peopled the world were elaborated by religion. Since these were made up of elements taken from the different kingdoms, men conceived a principle common to the most heterogeneous things, which thus became endowed with a sole and single essence.