For it may often be remarked that invalids grow weary of having the frequency of their attacks depend always on their own prudence in avoiding them, and like to let themselves think that they are free to do everything that they most enjoy doing, although they are always ill after doing it, provided only that they place themselves in the hands of a higher authority which, without putting them to the least inconvenience, can and will, by uttering a word or by administering a tabloid, set them once again upon their feet.