Disease is as much a vital process as health, only in one case the vital function is perverted, or destructive, while in health it is constructive. The germ theory of disease and cellular pathology are clearly within the domain of biological research, while chemistry has solved many physiological processes. Mental philosophy has been no less serviceable in the department of medicine, by teaching the wonderful influence of thought and emotions on the physiological functions of the organs. A one-sided education is inadequate to appreciate the subject of healing or teaching. A comprehensive knowledge of all that bears on the subject of health and disease has several important objects in view, namely, it thoroughly acquaints the doctor with all of nature’s resources for the amelioration or cure of disease; and it gives him judgment in all cases to avoid irreparably wrong treatment, which places obstacles in the road of nature’s efforts to heal spontaneously. The quack or professional imbecile will, in the ordinary course of diseases, be accredited with remarkable cures; in fact, the cures wrought by a quack or an ignorant person are just as welcome and valuable to the patient interested as if they were accomplished under the advice of the most erudite and skillful physician, but the invalid ran the chances of malpractice or bad treatment at the hands of the quack, which might have cost him his life, because the incompetent healer does not know when his method of treatment does mischief. Every method of cure may possess merits of its own, which are beneficial when the disease or conditions for its employment are present, whether this is mind cure, water cure, or anything else that you may name. All that any system of treatment can do is simply to stimulate the curative force of nature, which is the only _first cause_ of any cure.