According to this theory, the idea of the soul was first suggested to men by the badly understood spectacle of the double life they ordinarily lead, on the one hand, when awake, on the other, when asleep. In fact, for the savage,[98] the mental representations which he has while awake and those of his dreams are said to be of the same value: he objectifies the second like the first, that is to say, that he sees in them the images of external objects whose appearance they more or less accurately reproduce. So when he dreams that he has visited a distant country, he believes that he really was there. But he could not have gone there, unless two beings exist within him: the one, his body, which has remained lying on the ground and which he finds in the same position on awakening; the other, during this time, has travelled through space. Similarly, if he seems to talk with one of his companions who he knows was really at a distance, he concludes that the other also is composed of two beings: one which sleeps at a distance, and another which has come to manifest himself by means of the dream. From these repeated experiences, he little by little arrives at the idea that each of us has a double, another self, which in determined conditions has the power of leaving the organism where it resides and of going roaming at a distance. Of course, this double reproduces all the essential traits of the perceptible being which serves it as external covering; but at the same time it is distinguished from this by many characteristics. It is more active, since it can cover vast distances in an instant. It is more malleable and plastic; for, to leave the body, it must pass out by its apertures, especially the mouth and nose. It is represented as made of matter, undoubtedly, but of a matter much more subtile and etherial than any which we know empirically. This double is the soul. In fact, it cannot be doubted that in numerous societies the soul has been conceived in the image of the body; it is believed that it reproduces even the accidental deformities such as those resulting from wounds or mutilations. Certain Australians, after having killed their enemy, cut off his right thumb, so that his soul, deprived of its thumb also, cannot throw a javelin and revenge itself. But while it resembles the body, it has, at the same time, something half spiritual about it. They say that "it is the finer or more aeriform part of the body," that "it has no flesh nor bone nor sinew"; that when one wishes to take hold of it, he feels nothing; that it is "like a purified body."[99]