The purely materialistic physician concentrates all his study and effort upon the physical-material plane of being. To him, mental, spiritual, psychical, and moral phenomena are merely chemical and physiological actions and reactions of brain and nerve substance. He has nothing but contempt and derision for the man who believes in or knows of a spiritual body or a soul. He is like an artist who says: "My violin is all there is to music. The musician's art consists in keeping his instrument in good condition. Technique and the laws of harmony are a matter of imagination and of superstitious belief." On the other hand, mental healers, Christian Scientists and faith healers concentrate all their efforts upon either the mental or the soul plane, frequently making no distinction between the two. In the treatment of disease, they ignore the conditions and needs of the physical body, and some of them even deny its existence. These metaphysicians are like the artist who devotes all his time and energy to the study and practice of technique, counterpoint and harmony, neglecting his instrument and taking no heed whether its mechanism is out of order or its interior filled with rubbish. His knowledge of the laws of harmonics and his execution may be ever so perfect; but with his instrument out of tune and out of order he will produce discords instead of harmony. The true artist realizes that MIND, the player, must study SOUL, the harmonics; and that the mind must also have its instrument, the BODY, in perfect condition in order to interpret perfectly and artistically the harmonies of the symphony of life. Likewise, the Nature Cure physician will look for causes of disease and for means of cure upon the material, mental and psychical planes of being. Thus will higher civilization and greater knowledge lead back to the natural simplicity of primitive races, where physician and priest are one. After all, physical health is the best possible basis for the attainment of mental, moral and spiritual health. All building begins with the foundation. We do not first suspend the steeple in the air and then build the church under it. So also, the building of the temple of human character should begin by laying the foundation in physical health. We have known people who had attained high intellectual, moral and spiritual development and then suffered utter shipwreck physically, mentally and in every other way, because ignorantly they had violated the laws of their physical nature. There are others who believe that the possession of occult knowledge and the achievement of mastership confer absolute control over Nature's forces and phenomena on the physical plane. These people believe that a man is not a master if he does not miraculously heal all manner of disease and raise the dead.