The Formless Substance, which knows all truth and therefore thinks only truth, has perfect faith in every thought, because it thinks only truth; and so all its thoughts create. But if you will imagine a thought in Formless Substance in which there was no faith, you will see that such a thought could not cause the Substance to move or take form. Keep in mind the fact that only those thoughts which are conceived in faith have creative energy. Only those thoughts which have faith with them are able to change function, or to quicken the Principle of Health into activity. If you do not have faith in health, you will certainly have faith in disease. If you do not have faith in health, it will do you no good to think about health, for your thoughts will have no potency, and will cause no change for the better in your conditions. If you do not have faith in health, I repeat, you will have faith in disease; and if, under such conditions, you think about health for ten hours a day, and think about disease for only a few minutes, the disease thought will control your condition because it will have the potency of faith, while the health thought will not. Your mind-body will take on the form and motions of disease and retain them, because your health thought will not have sufficient dynamic force to change form or motion. In order to practice the Science of Being Well, you must have complete faith in health. Faith begins in belief; and we now come to the question: _What must you believe in order to have faith in health?_ You must believe that there is more health-power than disease-power in both yourself and your environment; and you cannot help believing this if you consider the facts. These are the facts:-- _There is a Thinking Substance from which all things are made, and which, in its original state, permeates, penetrates, and fills the interspaces of the universe._ _The thought of a form, in this Substance, produces the form; the thought of a motion institutes the motion. In relation to man, the thoughts of Original Substance are always of perfect health and perfect functioning. This Substance, within and without man, always exerts its power toward health._ _Man is a thinking center, capable of original thought. He has a mind-body of Original Substance permeating a physical body; and the functioning of his physical body is determined by the FAITH of his mind-body. If man thinks with faith of the functioning of health, he will cause his internal functions to be performed in a healthy manner, provided that he performs the external functions in a corresponding manner. But if man thinks, with faith, of disease, or of the power of disease, he will cause his internal functioning to be the functioning of disease._