Christian Science reveals that God is All-in-all, and that He is the source of all true substance, intelligence, qualities, and faculties. Moreover, it teaches that God is infinite divine Mind; and since all life and being are the eternal reflection of God, man is inseparable from all that abides in omnipotent, omniscient Mind. The wonderful thing about this great truth is the underlying fact that, because God is perfect, every idea, quality, and faculty reflected by the real man must of necessity be indestructible and perfect. Since there is but one cause and creator, it could not be otherwise. Thus we can know with scientific certainty that no counterinfluence can possibly exist to reverse the ceaseless operation of divine causation and its invariable spiritual effect.
Lifting thought above objectified beliefs, termed matter and physicality, enables one to see by means of the lens of divine Science the temporal and fleeting nature of mortality with its so-called material senses, in which change, accident, injury, loss, and disintegration appear, and to discern the enduring spiritual senses of man, which can never be impaired or annihilated, since their permanence and perfection reside not in matter or corporeality but in immortal Mind. How clearly and positively Mary Baker Eddy sums up this subject in her textbook, "Science and Health with Key to the Scriptures," when she states (p. 407): "No faculty of Mind is lost. In Science, all being is eternal, spiritual, perfect, harmonious in every action." And then she admonishes: "Let the perfect model be present in your thoughts instead of its demoralized opposite. This spiritualization of thought lets in the light, and brings the divine Mind, Life, not death, into your consciousness."
From the human standpoint it is generally conceded that the faculties of sight and hearing are of the utmost importance to each individual, and yet these faculties often seem susceptible to beliefs of impairment. For instance, many take it for granted, and acquiesce in the almost universal belief that as one grows older sight and hearing are likely to become impaired. This subtle suggestion comes so unobtrusively, yet so aggressively, that it is accepted by many students of Christian Science.