Disease is disturbed polarity. Exaggerated positive or negative conditions, whether physical, mental, moral or spiritual, tend to disease on the respective planes of being. Foods, medicines, suggestion and all the other different methods of therapeutic treatment exert on the individual subjected to them either a positive or a negative influence. It is, therefore, of the greatest importance that the physician and every one who wishes to live and work in harmony with Nature's Laws should understand this all-important question of magnetic polarity. Lowered vitality means lowered, slower and coarser vibration, and this results in lowered resistance to the accumulation of morbid matter, poisons, disease taints, germs and parasites. This is what we designate ordinarily as the negative condition. Let us see whether we can explain this more fully by a homely but practical illustration: A great many of my readers have probably seen in operation in the summer amusement parks the "human roulette." This contrivance consists of a large wheel, board-covered, somewhat raised in the center, and sloping towards the circumference. The wheel rotates horizontally, evenly with the floor or ground. The merrymakers pay their nickels for the privilege of throwing themselves flat down on the wheel and attempting to cling to it while it rotates with increasing swiftness. While the wheel moves slowly, it is easy enough to cling to it; but the faster it revolves, the more strongly the centrifugal force tends to throw off the human flies who try to stick to it. The increasing repelling power of the accelerated motion of the wheel may serve as an illustration of that which we call vigorous vibration, good vitality, natural immunity or recuperative power. This is the positive condition. The more intense the action of the life force, the more rapid and vigorous are the vibratory activities of the atoms and molecules in the cells, and of the cells in the organs and tissues of the body. The more rapid and vigorous this vibratory activity, the more powerful is the repulsion and expulsion of morbid matter, poisons and germs of disease which try to encumber or destroy the organism. Health and Disease Resident in the Cell We must not forget that health or disease, in the final analysis, is resident in the cell. Though a minute, microscopic organism, the cell is an independent living being, which is born, grows, eats, drinks, throws off waste matter, multiplies, ages and dies, just like man, the large cell. If the individual cell is well, man, the complex cell, is well also, and vice versa. From this it is apparent that in all our considerations of the processes of health, disease and cure, we have to deal primarily with the individual cell.