4. As the new-born child differs little in grade of physical organization from the mature but unborn embryo, but at the moment of birth there is a sudden and complete change, not so much in the grade of organization but in the whole plane of existence--a change absolutely necessary for further advance, for another cycle of life; even so at the moment of the origin of man, howsoever this may have been accomplished, there may have been no great change in the _grade_ of _psychical_ structure, but yet a complete change in the _plane_ of psychical life--a change absolutely necessary for further advance, for another cycle of evolution. In both cases there is a sudden entrance into a new world, the sudden appearance of a new creature with entirely different capacities--a passing out of an old world, a waking up in a new and higher. According to this view, man alone is a _child_ of God, capable of separate spirit-life--separate but not yet wholly independent of Nature. As already said, Nature is no longer gestative mother, but still nursing mother of spirit--we are weaned only by death. 5. Or, again: As in passing up the _organic_ scale, we find all grades of completeness of organic individuality, an increasing individuation of bodily form which completes itself as a perfect organic individual only in the higher animals, so, also, in passing up the _dynamic_ scale, force or energy is individuated more and more until the process reaches completeness as a spirit-individual or dynamic individual--a person only in man. _Organic_ individuality completes itself in animals. _Psychic_ individuality only in man. 6. One more illustration and the last. The animal body may be likened to an exquisitely adjusted instrument of communication between two worlds--the material world without and the spiritual world within. The key-boards of this marvelous instrument are the nerve-terminals of the sense-organs in contact with the material world, and the brain-cells in touch with the spirit-world. External Nature plays on the one by sensation and determines changes in spirit. Spirit plays on the other by will and muscular contraction, and determines changes in external Nature. Now, in animals spirit is fast asleep or at most dreaming, or even perhaps somnambulistic, but at least unconscious of _self_, and acts only by stimulus--only responds in some sense automatically as sleepers do. In man spirit is wide awake and may respond automatically like animals, or may choose not to respond at all. Moreover, it acts freely in its own domain--the world of ideas--_without external stimulus_; or of its own free-will may _initiate_ changes in the external world. With God all phenomena commence at the _spirit-end_. In animals all commence at the _matter-end_, and by automatic response terminate in the same. Man alone lives in both worlds, partakes of both natures, and acts according to either method.