The present volume and others of the "Nature Cure Series" which are to follow are an attempt to answer Mr. Louden's inquiry and to formulate and elucidate the fundamental laws of health, disease and cure for which he and many others have been vainly seeking. Who among you at some time or another, has not thought and felt like Mr. Louden and in doubt and perplexity voiced Pilate's query, What Is Truth? The exact information and rational method of teaching which Mr. Louden is seeking, has heretofore been wanting in health-culture literature. Many, indeed, stand ready and willing to show the way to physical, mental and moral perfection. Hundreds, yes, thousands, of different cults, isms, teachers, books and periodicals treat of these subjects, but their teachings are so manifold, so contradictory and confusing, that one becomes bewildered amid the ever increasing testimony. As is often the case in the study of complicated subjects, the more one reads and the more one hears, the less one knows. I believe that no one has described more strikingly this state of general perplexity than Mr. Louden in his excellent letter. Nevertheless, these simple fundamental laws and principles really exist. They must exist, because everything in Nature, including the processes of health, of disease and cure, of birth, of life and death, are subject to law and order. Allopathy, or Old School Medical Science, admits that it does not know these fundamental principles; that it reasons, not from underlying causes, but from external symptoms and personal experiences. It is, therefore, self?confessedly full of doubts, errors and confusion; in short, empirical-and necessarily, a failure