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 Abbey some time ago: "The recent researches of scientific men, endorsed by experiments in the Salpetriere in Paris, have drawn attention to the intensely creative power of suggestions made by the conscious mind to the subconscious mind." IV THE POWERFUL AID OF THE MIND IN REBUILDING BODY--HOW BODY HELPS 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 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.