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We must get over the idea, as we quickly will, if we study into the matter, that the body, in fact anything that we call material and solid, is really solid. Even in the case of a piece of material as "solid" as a bar of steel, the atoms forming the molecules are in continual action each in conjunction with its neighbour. In the last analysis the body is composed of cells—cells of bone, vital organ, flesh, sinew. In the body the cells are continually changing, forming and reforming. Death would quickly take place were this not true. Nature is giving us a new body practically every year.
There are very few elements, cells, in the body of today that were there a year ago. The rapidity with which a cut or wound on the body is replaced by healthy tissue, the rapidity with which it heals, is an illustration of this. One "touches" himself in shaving. In a week, sometimes in less than a week, if the blood and the cell structure be particularly healthy, there is no trace of the cut, the formation of new cell tissue has completely repaired it. Through the formation of new[Pg 47] cell structure the life-force within, acting through the blood, is able to rebuild and repair, if not too much interfered with, very rapidly. The reason, we may say almost the sole reason, that surgery has made such great advances during the past few years, so much greater correspondingly than medicine, is on account of a knowledge of the importance of and the use of antiseptics—keeping the wound clean and entirely free from all extraneous matter.
So then, the greater portion of the body is really new, therefore young, in that it is almost entirely this year's growth. Newness of form is continually being produced in the body by virtue of this process of perpetual renewal that is continually going on, and the new cells and tissues are just as new as is the new leaf that comes forth in the springtime to take the place of and to perform the same functions as the one that was thrown off by the tree last autumn.
The skin renews itself through the casting off of used cells (those that have already performed their functions) most rapidly, taking but a few weeks. The muscles, the vital organs, the entire arterial system, the brain and the nervous system all take longer, but all are practically renewed within a year, some in much less time. Then comes the bony structure,[Pg 48] taking the longest, varying, we are told, from seven and eight months to a year, in unusual cases fourteen months and longer.
It is, then, through this process of cell formation that the physical body has been built up, and through the same process that it is continually renewing itself. It is not therefore at any time or at any age a solid fixed mass or material, but a structure in a continually changing fluid form. It is therefore easy to see how we have it in our power, when we are once awake to the relations between the conscious mind and the subconscious—and it in turn in its relations to the various involuntary and vital functions of the body—to determine to a great extent how the body shall be built or how it shall be rebuilt.
Mentally to live in any state or attitude of mind is to take that state or condition into the subconscious. The subconscious mind does and always will produce in the body after its own kind. It is through this law that we externalise and become in body what we live in our minds. If we have predominating visions of and harbour thoughts of old age and weakness, this state, with all its attendant circumstances, will become externalised in our bodies far more quickly than if we entertain thoughts and visions of a different type. Said Archdeacon Wilberforce in a notable address in Westminster[Pg 49] Abbey some time ago: "The recent researches of scientific men, endorsed by experiments in the Salptrire in Paris, have drawn attention to the intensely creative power of suggestions made by the conscious mind to the subconscious mind."
"The body looks," some one has said, "as old as the mind feels." By virtue of a great mental law and at the same time chemical law we are well within the realm of truth when we say: The body ordinarily is as old as the mind feels.
Every living organism is continually going through two processes: it is continually dying, and continually being renewed through the operation and the power of the Life Force within it. In the human body it is through the instrumentality of the cell that this process is going on. The cell is the ultimate constituent in the formation and in the life of tissue, fibre, tendon, bone, muscle, brain, nerve system, vital organ. It is the instrumentality that Nature, as we say, uses to do her work.
The cell is formed; it does its work; it serves its purpose and dies; and all the while new cells are being formed to take its place. This process of new cell formation is going on in the body of each of us much more rapidly[Pg 51] and uniformly than we think. Science has demonstrated the fact that there are very few cells in the body today that were there twelve months ago. The form of the body remains practically the same; but its constituent elements are in a constant state of change. The body, therefore, is continually changing; it is never in a fixed state in the sense of being a solid, but is always in a changing, fluid state. It is being continually remade.
It is the Life, or the Life Force within, acting under the direction and guidance of the subconscious or subjective mind that is the agency through which this continually new cell-formation process is going on. The subconscious mind is, nevertheless, always subject to suggestions and impressions that are conveyed to it by the conscious or sense mind; and here lies the great fact, the one all-important fact for us so far as desirable or undesirable, so far as healthy or unhealthy, so far as normal or aging body-building is concerned.
That we have it in our power to determine our physical and bodily conditions to a far greater extent than we do is an undeniable fact. That we have it in our power to determine and to dictate the conditions of "old age" to a marvellous degree is also an undeniable fact—if we are sufficiently keen and sufficiently awake to begin early enough.[Pg 52]
If any arbitrary divisions of the various periods of life were allowable, I should make the enumeration as follows: Youth, barring the period of babyhood, to forty-five; middle age, forty-five to sixty; approaching age, sixty to seventy-five; old age, seventy-five to ninety-five and a hundred.
That great army of people who "age" long before their time, that likewise great army of both men and women who along about middle age, say from forty-five to sixty, break and, as we say, all of a sudden go to pieces, and many die, just at the period when they should be in the prime of life, in the full vigour of manhood and womanhood and of greatest value to themselves, to their families, and to the world, is something that is contrary to nature, and is one of the pitiable conditions of our time. A greater knowledge, a little foresight, a little care in time could prevent this in the great majority of cases, in ninety cases out of every hundred, without question.
Abounding health and strength—wholeness—is the natural law of the body. The Life Force of the body, acting always under the direction of the subconscious mind, will build, and always does build, healthily and normally, unless too much interfered with. It is this that determines the type of the cell structure that is continually being built into the body[Pg 53] from the available portions of the food that we take to give nourishment to the body. It is affected for good or for bad, helped or hindered, in its operation by the type of conscious thought that is directed toward it, and that it is always influenced by.