Since however the present constitution of man cannot be understood without going back to the Saturn state, the description therefore must be given. And surely no one will misunderstand such a description who keeps in view the existence of the difficulty, and the fact that owing to it much that is said must be in the nature of a suggestion or hint of the facts in question, rather than an exact description of them. ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ The physical body is the oldest of the present four principles of man’s being. It is also the one, which, in its way, has attained the greatest perfection. Occult research shows that this part of man already existed during the Saturn evolution. It will be shown in the following account that the form taken by the physical body on Saturn was, of course, something quite different from the present physical body of man. The earthly physical human body, from its nature, can only exist by being in connection with the etheric and astral bodies and the ego, in the manner described earlier in this book. Such a condition did not as yet exist on Saturn. The physical body was then passing through the first stage of its evolution, without having a human etheric body, an astral body, or an ego incorporated in it. During the Saturn evolution it was growing ripe for the reception of an etheric body. For that purpose Saturn had eventually to pass into a spiritual condition, and then to be reincarnated as the Sun. During the Sun incarnation the physical body developed again to the stage it had reached on Saturn as from a germ brought over and only then could it be inter-penetrated by an etheric body. By means of this incorporation of an etheric body, a change took place in the nature of the physical body; it was raised to a second stage of perfection. A similar thing took place during the Moon evolution. Man’s ancestor, as he had developed himself when passing from the Sun to the Moon, incorporated in himself the astral body. As a result, the physical body was changed for the second time, and thus raised to its third stage of perfection; at the same time the etheric body was likewise changed, and passed to its second stage of perfection. On the earth the ego was incorporated in man’s ancestor, now composed of the physical, etheric, and astral bodies. Thereby the physical body reached its fourth stage of perfection, the etheric body its third, and the astral body its second stage; the ego is only now at the first stage of its existence.