The present state and condition of the body have been produced primarily by the thoughts that have been taken by the conscious mind into the subconscious, that is so intimately related to and that directs all the subconscious and involuntary functions of the body. Says one: It may be true that the mind has had certain effects upon the body; but to be able _consciously_ to affect the body through the mind is impossible and even unthinkable, for the body is a solid, fixed, material form. 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 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, taking the longest, varying, we are told, from seven and eight months to a year, in unusual cases fourteen months and longer.