In prehistoric times men believed in a close relationship between the soul of the deceased and his body in the grave, and this purely instinctive faith is the more remarkable, as it prevailed during stages of civilization when differentiation between spiritual qualities and physical matter was almost unknown. The contradistinction between soul and body is certainly a fact, a general experience. But neither the individual nor the race realizes this fact suddenly or all at once. The knowledge of the distinction between the physical and the spiritual sphere, with their different characteristics and qualities, proceeds step by step, being the result of slowly advancing evolution. The child and the savage remain unconscious of any discrimination between soul and body, and even for the more cultivated man, the border between the two is vague and undetermined. According to the psychologic order of man’s evolution we might therefore expect that the problem as to this relationship would appear at a comparatively late date, and even then be of importance only to a reduced number of more cultivated individuals. But, on the contrary, experience shows that this question occupies the thoughts of men in very low stages of civilization, and, in fact, that it is of the most general interest. The reason for this evidently lies in the instinctive belief that the body contains something which is immortal, and which in the life hereafter the soul cannot dispense with. In its first historic form the question concerning the soul’s relation to the body deals with this relation after, not before, the separation of the soul and body. This latter problem emerges only in very high stages of civilization, and even then is of scientific interest to an insignificant minority only, while the question of our existence after death is religious in its nature and of interest to all. In olden times men were more fully convinced of a continued personal existence after death than civilized mankind seems to be nowadays. The same vivid conviction we find even in our age among people in the natural state. From the prehistoric peoples we have no written communication, but from their graves they speak to the present day intelligibly and plainly of their belief in a life to come. Behold the monuments defying time and decay, which these people have erected in memory of their deceased. The sepulchres of the Egyptian kings to this very day arouse our amazement and admiration.