Since the author's discovery of the adaptation of Truth to the treatment of disease, as well as of Sin, her system has been fully tested, and has not been found wanting; but to reach the heights of Christian Science, man must live in Obedience to its divine Principle. To develop the full glory Of this Science, the discords of corporeal sense must yield to the harmony of Spiritual sense; even as the science of sound corrects false tones caught by the ear, and gives sweet concord to music.