No mineral particle, no dead chemical substance has ever been made a constituent of organic tissue except through the agency of life. We may, perhaps with profit, carry the analogy a step farther. The plant is unable to advance its own tissue to the animal plane. Though it be the recognized order of nature that the "animal kingdom" is dependent upon the "vegetable kingdom" for its sustenance, the substance of the plant may become part of the animal organism only as the latter reaches down from its higher plane and by its own vital action incorporates the vegetable compounds with itself. In turn, animal matter can never become, even transitorily, part of a human body, except as the living man assimilates it, and by the vital processes of his own existence lifts, for the time being, the substance of the animal that supplied him food to the higher plane of his own existence. The comparison herein employed is admittedly defective if carried beyond reasonable limits of application; for the raising of mineral matter to the plane of the plant, vegetable tissue to the level of the animal, and the elevation of either to the human plane, is but a temporary change; with the dissolution of the higher tissues the material thereof falls again to the level of the inanimate and the dead. But, as a means of illustration the analogy may not be wholly without value. So, for the advancement of man from his present fallen and relatively degenerate state to the higher condition of spiritual life, a power above his own must cooperate. Through the operation of the laws obtaining in the higher kingdom man may be reached and lifted; himself he cannot save by his own unaided effort.[65] A Redeemer and Savior of mankind is beyond all question essential to the realization of the plan of the Eternal Father, "to bring to pass the immortality and eternal life of man";[66] and that Redeemer and Savior is Jesus the Christ, beside whom there is and can be none other. NOTES TO CHAPTER 3.