When discussing the foregoing phenomena with friends and pupils, I am frequently asked questions like this: “To what are we to attribute the particular manifestations of strength or weakness in different people, where specific abnormal sensations are concerned?” “Why is one person swayed unduly by some particular sensation which he knows is ruining his health and causing daily suffering, whilst another, equally abnormal and deluded though proof against this failing of his fellow being, succumbs to some other type of sensory influence?” It is simply a matter of the psycho-physical make-up of the individual, of his inherent tendencies, and of his general experiences of life in different environments. All people whose kinæsthetic systems are debauched and delusive develop some form of perversion or abnormality in sensation. The point of real importance is to eradicate and prevent this kinæsthetic condition in order to make impossible in the human being such domination by sensation. There is another point which exercises the layman’s mind, and that is that great suffering, in consequence of abnormal indulgence in some direction, does not act as a deterrent. Of course, if these unfortunates were in communication with their reason and were thus consciously guided and controlled, such suffering would serve to prevent them from repeating the experience which caused it. To those who have studied this curious phase of mental and physical phenomena, it would almost seem that they derived a form of satisfaction or pleasure from such suffering; otherwise, one would conclude, they would not continue to repeat the acts, which, in their experience, have been followed by actual pain and discomfort. And surely there is nothing very unreasonable in this suggestion, seeing that there is little doubt that _ill health_ in some people is just as natural as _health_ is in others. It simply means an attempt on the part of nature to do her work where the conditions are _abnormal_, in accordance with the same process as where they are _normal_. The person enjoying the latter condition abhors suffering and pain, and will act reasonably in order to prevent both, and it is quite consistent with our knowledge and experience of the abnormal in the human organism to incline to the idea that those who are afflicted with abnormal tendencies find a perverted form of pleasure in pain. And all these suggestions serve to support the theory that the first principle in all training, from the earliest years of child life, must be on a conscious plane of co-ordination, re-education and re-adjustment, which will establish a normal kinæsthesia.