If it were true, it would be necessary to admit that religious beliefs are so many hallucinatory representations, without any objective foundation whatsoever. It is supposed that they are all derived from the idea of the soul because one sees only a magnified soul in the spirits and gods. But according to Tylor and his disciples, the idea of the soul is itself constructed entirely out of the vague and inconsistent images which occupy our attention during sleep: for the soul is the double, and the double is merely a man as he appears to himself while he sleeps. From this point of view, then, sacred beings are only the imaginary conceptions which men have produced during a sort of delirium which regularly overtakes them every day, though it is quite impossible to see to what useful ends these conceptions serve, nor what they answer to in reality. If a man prays, if he makes sacrifices and offerings, if he submits to the multiple privations which the ritual prescribes, it is because a sort of constitutional eccentricity has made him take his dreams for perceptions, death for a prolonged sleep, and dead bodies for living and thinking beings. Thus not only is it true, as many have held, that the forms under which religious powers have been represented to the mind do not express them exactly, and that the symbols with the aid of which they have been thought of partially hide their real nature, but more than that, behind these images and figures there exists nothing but the nightmares of primitive minds. In fine, religion is nothing but a dream, systematized and lived, but without any foundation in reality.[134] Thence it comes about that the theorists of animism, when looking for the origins of religious thought, content themselves with a small outlay of energy. When they think that they have explained how men have been induced to imagine beings of a strange, vaporous form, such as those they see in their dreams, they think the problem is resolved.