Darwin on moral sense.
Reason's function in defining the ideal is in principle extremely simple, although all time and all existence would have to be gathered in before the applications of that principle could be exhausted. A better example of its essential working could hardly be found than one which Darwin gives to illustrate the natural origin of moral sense. A swallow, impelled by migratory instincts to leave a nest full of unfledged young, would endure a moral conflict. The more lasting impulse, memory being assumed, would prompt a moral judgment when it emerged again after being momentarily obscured by an intermittent passion. "While the mother bird is feeding or brooding over her nestlings, the maternal instinct is probably stronger than the migratory; but the instinct which is more persistent gains the victory, and at last, at a moment when her young ones are not in sight, she takes flight and deserts them. When arrived at the end of her long journey, and the migratory instinct ceases to act, what an agony of remorse each bird would feel if, from being endowed with great mental activity, she could not prevent the image continually passing before her mind of her young ones perishing in the bleak north from cold and hunger."[E] She would doubtless upbraid herself, like any sinner, for a senseless perfidy to her own dearest good. The perfidy, however, was not wholly senseless, because the forgotten instinct was not less natural and necessary than the remembered one, and its satisfaction no less true. Temptation has the same basis as duty. The difference is one of volume and permanence in the rival satisfactions, and the attitude conscience will assume toward these depends more on the representability of the demands compared than on their original vehemence or ultimate results.
Conscience and reason compared.
A passionate conscience may thus arise in the play of impulses differing in permanence, without involving a judicial exercise of reason. Nor does such a conscience involve a synthetic ideal, but only the ideal presence of particular demands. Conflicts in the conscience are thus quite natural and would continually occur but for the narrowness that commonly characterises a mind inspired by passion. A life of sin and repentance is as remote as possible from a Life of Reason. Yet the same situation which produces conscience and the sense of duty is an occasion for applying reason to action and for forming an ideal, so soon as the demands and satisfactions concerned are synthesised and balanced imaginatively. The stork might do more than feel the conflict of his two impulses, he might do more than embody in alternation the eloquence of two hostile thoughts. He might pass judgment upon them impartially and, in the felt presence of both, conceive what might be a union or compromise between them.
This resultant object of pursuit, conceived in reflection and in itself the initial goal of neither impulse, is the ideal of a mind occupied by the two: it is the aim prescribed by reason under the circumstances. It differs from the prescription of conscience, in that conscience is often the spokesman of one interest or of a group of interests in opposition to other primary impulses which it would annul altogether; while reason and the ideal are not active forces nor embodiments of passion at all, but merely a method by which objects of desire are compared in reflection. The goodness of an end is felt inwardly by conscience; by reason it can be only taken upon trust and registered as a fact. For conscience the object of an opposed will is an evil, for reason it is a good on the same ground as any other good, because it is pursued by a natural impulse and can bring a real satisfaction. Conscience, in fine, is a party to moral strife, reason an observer of it who, however, plays the most important and beneficent part in the outcome by suggesting the terms of peace. This suggested peace, inspired by sympathy and by knowledge of the world, is the ideal, which borrows its value and practical force from the irrational impulses which it embodies, and borrows its final authority from the truth with which it recognises them all and the necessity by which it imposes on each such sacrifices as are requisite to a general harmony.
Reason imposes no new sacrifice.
Could each impulse, apart from reason, gain perfect satisfaction, it would doubtless laugh at justice. The divine, to exercise suasion, must use an argumentum ad hominem; reason must justify itself to the heart. But perfect satisfaction is what an irresponsible impulse can never hope for: all other impulses, though absent perhaps from the mind, are none the less present in nature and have possession of the field through their physical basis. They offer effectual resistance to a reckless intruder. To disregard them is therefore to gain nothing: reason, far from creating the partial renunciation and proportionate sacrifices which it imposes, really minimises them by making them voluntary and fruitful. The ideal, which may seem to wear so severe a frown, really fosters all possible pleasures; what it retrenches is nothing to what blind forces and natural catastrophes would otherwise cut off; while it sweetens what it sanctions, adding to spontaneous enjoyments a sense of moral security and an intellectual light.
Natural goods attainable and compatible in principle.
Those who are guided only by an irrational conscience can hardly understand what a good life would be. Their Utopias have to be supernatural in order that the irresponsible rules which they call morality may lead by miracle to happy results. But such a magical and undeserved happiness, if it were possible, would be unsavoury: only one phase of human nature would be satisfied by it, and so impoverished an ideal cannot really attract the will. For human nature has been moulded by the same natural forces among which its ideal has to be fulfilled, and, apart from a certain margin of wild hopes and extravagances, the things man's heart desires are attainable under his natural conditions and would not be attainable elsewhere. The conflict of desires and interests in the world is not radical any more than man's dissatisfaction with his own nature can be; for every particular ideal, being an expression of human nature in operation, must in the end involve the primary human faculties and cannot be essentially incompatible with any other ideal which involves them too.
To adjust all demands to one ideal and adjust that ideal to its natural conditions—in other words, to live the Life of Reason—is something perfectly possible; for those demands, being akin to one another in spite of themselves, can be better furthered by co-operation than by blind conflict, while the ideal, far from demanding any profound revolution in nature, merely expresses her actual tendency and forecasts what her perfect functioning would be.
Harmony the formal and intrinsic demand of reason.
Reason as such represents or rather constitutes a single formal interest, the interest in harmony. When two interests are simultaneous and fall within one act of apprehension the desirability of harmonising them is involved in the very effort to realise them together. If attention and imagination are steady enough to face this implication and not to allow impulse to oscillate between irreconcilable tendencies, reason comes into being. Henceforth things actual and things desired are confronted by an ideal which has both pertinence and authority.
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