[CHAPTER VI.]
THE BIOLOGICAL VIEW.
§ 30. The truth that the ideally moral man is one in whom the moving equilibrium is perfect, or approaches nearest to perfection, becomes, when translated into physiological language, the truth that he is one in whom the functions of all kinds are duly fulfilled. Each function has some relation, direct or indirect, to the needs of life: the fact of its existence as a result of evolution, being itself a proof that it has been entailed, immediately or remotely, by the adjustment of inner actions to outer actions. Consequently, non-fulfillment of it in normal proportion is non-fulfillment of a requisite to complete life. If there is defective discharge of the function, the organism experiences some detrimental result caused by the inadequacy. If the discharge is in excess, there is entailed a reaction upon the other functions, which in some way diminishes their efficiencies.
It is true that during full vigor, while the momentum of the organic actions is great, the disorder caused by moderate excess or defect of any one function, soon disappears—the balance is re-established. But it is none the less true that always some disorder results from excess or defect, that it influences every function, bodily and mental, and that it constitutes a lowering of the life for the time being.
Beyond the temporary falling short of complete life implied by undue or inadequate discharge of a function there is entailed, as an ultimate result, decreased length of life. If some function is habitually performed in excess of the requirement, or in defect of the requirement; and if, as a consequence, there is an often repeated perturbation of the functions at large, there results some chronic derangement in the balance of the functions. Necessarily reacting on the structures, and registering in them its accumulated effects, this derangement works a general deterioration; and when the vital energies begin to decline, the moving equilibrium, further from perfection than it would else have been, is sooner overthrown: death is more or less premature.
Hence the moral man is one whose functions—many and varied in their kinds, as we have seen—are all discharged in degrees duly adjusted to the conditions of existence.
§ 31. Strange as the conclusion looks, it is nevertheless a conclusion to be here drawn, that the performance of every function is, in a sense, a moral obligation.
It is usually thought that morality requires us only to restrain such vital activities as, in our present state, are often pushed to excess, or such as conflict with average welfare, special or general; but it also requires us to carry on these vital activities up to their normal limits. All the animal functions, in common with all the higher functions, have, as thus understood, their imperativeness. While recognizing the fact that in our state of transition, characterized by very imperfect adaptation of constitution of conditions, moral obligations of supreme kinds often necessitate conduct which is physically injurious; we must also recognize the fact that, considered apart from other effects, it is immoral so to treat the body as in any way to diminish the fullness or vigor of its vitality.
Hence results one test of actions. There may in every case be put the questions—Does the action tend to maintenance of complete life for the time being? and does it tend to prolongation of life to its full extent? To answer yes or no to either of these questions, is implicitly to class the action as right or wrong in respect of its immediate bearings, whatever it may be in respect of its remote bearings.
The seeming paradoxicalness of this statement results from the tendency, so difficult of avoidance, to judge a conclusion which presupposes an ideal humanity, by its applicability to humanity as now existing. The foregoing conclusion refers to that highest conduct in which, as we have seen, the evolution of conduct terminates—that conduct in which the making of all adjustments of acts to ends subserving complete individual life, together with all those subserving maintenance of offspring and preparation of them for maturity, not only consist with the making of like adjustments by others, but furthers it. And this conception of conduct in its ultimate form implies the conception of a nature having such conduct for its spontaneous outcome—the product of its normal activities. So understanding the matter, it becomes manifest that under such conditions any falling short of function, as well as any excess of function, implies deviation from the best conduct or from perfectly moral conduct.