It is the intent and purpose of this volume to warn against the exploitation of destructive combative methods to the neglect of preventive constructive and conservative methods. If these teachings contribute something toward this end they will fulfil their mission. The Author Chicago, Nov., 1913. INTRODUCTION It was the following letter from Mr. William Louden to the editor of ~"Health Culture"~ which prompted the author to issue the ~"Nature Cure Magazine"~ (published from November, 1907, to October, 1909). In the series of books of which this is the first volume, he will endeavor to collect and systematize all his former writings in the~ "Nature Cure Magazine," "Health Culture," "Life and Action,"~ the ~"Naturopath,"~ the ~"Volksrath,"~ and other publications, and to amplify these by new material obtained through further research and wider experience. Mr. Albert Turner, Editor of ~"Health Culture."~ DEAR SIR--I write to ask what you consider the best book or pamphlet to put into the hands of people generally, in regard to the preservation of health. I know ther e are a number of very excellent publications, but as a rule they deal with certain details or phases of the question, and do not begin with the great underlying principles in such a way as to attract and hold the attention of the masses. One advocates one plan, and another an entirely different, and sometimes a directly opposite plan--such as uncooked vs. thoroughly cooked food; a strictly vegetarian diet, and mental culture in place of attention to either, etc. Such a state of affairs makes it confusing to average people and gets them to believe that health reformers are all at sea, and what is good for one is not good for another, or, in common language, "what is one man's meat is another's poison." Now, I know it is natural, and doubtless best, that there should be a difference of opinion on any question, but at the same time, if any movement is to be crowned with great success, there should be some underlying principles upon which all should agree, and these should be pressed to the forefront, so as to attract and hold the attention of the people, in place of the divergent details upon which they disagree. If these fundamental laws and principles are thoroughly studied and well defined, it may be found that they would explain the discrepancies between the different theories, and that under certain conditions, one plan is best, and that under different conditions another plan is more applicable, etc. The pushing of these fundamental principles to the front would also tend to correct errors into which the different theorists have fallen, and would certainly tend to make the different theories more homogeneous and more easily understood by people in general, than at present.