In this classic translation of Theosophy, Steiner brings us a psychology based not on the conventional duality of body and mind, but on the more ancient division of body, soul, and spirit. Steiner offers a detailed description of the functions and organs of the three aspects of the human being, as well as the objective realms to which they belong. Just as the physical body originates in and belongs to the material world, so too do the human soul and spirit belong to their specific realms.