This knowledge is the sanctification of the "flesh," so constantly and unjustifiably rejected and reviled as against that of the spirit. I am not dealing with theories, but am stating facts which will be as positively proven as any other scientific facts ever have been proven. These proofs will not be all forthcoming in this book, however, there being other subjects of equal, if not greater, importance that I have to deal with before I can reach them; these subjects being of such a nature that they must be explained before those immediately connected with voice production can be properly dealt with. I have been reproached with attempting too much; with dealing with too many subjects at one and the same time; that I ought to complete one theme and then take hold of another. Just so; but this cannot be done. I must first deal with general principles. Our entire system being of a homogeneous nature, I cannot deal with separate issues until these principles have been dealt with and understood in their entirety. Besides, I cannot hope to ever _complete_ any one thing. I shall be well satisfied if I shall be able to simply touch upon every subject that has come under my observation, lightly, suggesting things, and leaving it to others to enter more thoroughly into the same. INTROSPECTION With our mortal eyes turned outwardly we cannot see spiritual things, nor the motive power of life, nor the material form the spirit assumes in moving the mechanism of the body. For there _is_ a material way in which it is thus moved, as there necessarily must be, and I have obtained glimpses thereat by turning my eyes inwardly--by looking into myself with the _inner_ surface of my eyes. Yet through all these centuries people have been using that portion of their eyes which is intended for external vision only, in a vain endeavor to arrive at spiritual-material facts. Thus the larynx, as the supposed seat of the voice, has been subjected to scrutiny based upon laws derived from phenomena which owe their origin to physical causes only. During this vain endeavor the larynx has been subjected to torture and maltreatment worse than that inflicted upon a mediæval witch. But its tormentors have derived no solace from this treatment, not even that of a confession of imaginary sins. Why not? Simply because it had not anything to confess, being a reflex, an indirect, and not a free and original agent. Through torture (by means of the laryngoscope), the destroyer of harmony, we cannot arrive at laws based upon harmony.