“Notably the best rules for the conduct of life are the fruits of the best observations of men and things; the achievements of science are no more than the organized gains——orderly and methodically arranged——of an exact and systematic observation of the various departments of Nature; the noblest products of the arts are Nature ennobled through human means, the art itself being Nature. There are not two worlds——a world of Nature and a world of human nature——standing over against one another, in a sort of antagonism, but one world of Nature, in the orderly evolution of which human nature has its subordinate part. Disease, hallucinations, idiosyncrasies of whatever sort, are the product of disobedience to law——discordant notes in the Divine harmony, which result from an unskillful or careless touch. It should, then, be every man’s steadfast aim, as a part of Nature, his patient work, to cultivate such entire sincerity of relations with it, so to think, feel, and act, always in intimate unison with it, that when the summons comes to surrender his mortal part to absorption into it, he does so, not fearfully, as to an enemy who has vanquished him, but trustfully, as to a mother who, when the day’s task is done, bids him lie down to sleep.” CHAPTER II. CONSUMPTION. Among the causes of consumption it is usually held that inherited tendency is one of the most efficient. Considering, however, the fact that this is a matter beyond our control; that is, a cause that we can not remove, it is hardly worth while to devote further space, just here, to its consideration. We can not create a new constitution; neither the mischief of a defective inheritance, nor of years of disobedience to the laws of life, can be atoned for——the future only is ours; the balance of vital capital can be expended judiciously, good health regained, often, and life made easy and extended to the utmost limit. Leaving the question of the influence of the spiritual over the physical nature for later consideration (see Conclusion), we have, practically, to take the body as we find it, and aim to conserve its vitality and to improve its condition; and when affected by disease, whether inherited or acquired, to seek its removal by building up the constitution, so to say, by every means in our power.