I have now said all that I had intended to say on the subject of health. And now, before finally taking leave of my readers, I will say. a word or two on my object in writing these pages.
One question which I have asked myself again and again, in the course of writing this book, is why I of all persons should write it. Is there any justification at all for one like me, who am no doctor, and whose knowledge of the matters dealt with in these pages must be necessarily imperfect, attempting to write a book of this kind?
My defence is this. The "science" of medicine is itself based upon imperfect knowledge, most of it being mere quackery. But this book, at any rate, has been prompted by the purest of motives. The attempt is here made not so much to show how to cure diseases as to point out the means of preventing them. And a little reflection will show that the prevention of disease is a comparatively simple matter, not requiring much specialist knowledge, although it is by no means an easy thing to put these principles into practice. Our object has been to show the unity of origin and treatment of all diseases, so that all people may