《道德原则研究·第六章·论对自己有用的品质》第3节
But if, instead of this fancied monster, we suppose a Man to form a judgement or determination in the case, there is to him a plain foundation of preference, where everything else is equal; and however cool his choice may be, if his heart be selfish, or if the persons interested be remote from him; there must still be a choice or distinction between what is useful, and what is pernicious. Now this distinction is the same in all its parts, with the Moral distinction, whose foundation has been so often, and so much in vain, enquired after. The same endowments of the mind, in every circumstance, are agreeable to the sentiment of morals and to that of humanity; the same temper is susceptible of high degrees of the one sentiment and of the other; and the same alteration in the objects, by their nearer approach or by connexions, enlivens the one and the other. By all the rules of philosophy, therefore, we must conclude, that these sentiments are originally the same; since, in each particular, even the most minute, they are governed by the same laws, and are moved by the same objects. Why do philosophers infer, with the greatest certainty, that the moon is kept in its orbit by the same force of gravity, that makes bodies fall near the surface of the earth, but because these effects are, upon computation, found similar and equal? And must not this argument bring as strong conviction, in moral as in natural disquisitions? To prove, by any long detail, that all the qualities, useful to the possessor, are approved of, and the contrary censured, would be superfluous. The least reflection on what is every day experienced in life, will be sufficient. We shall only mention a few instances, in order to remove, if possible, all doubt and hesitation. The quality, the most necessary for the execution of any useful enterprise, is discretion; by which we carry on a safe intercourse with others, give due attention to our own and to their character, weigh each circumstance of the business which we undertake, and employ the surest and safest means for the attainment of any end or purpose. To a Cromwell, perhaps, or a De Retz, discretion may appear an alderman-like virtue, as Dr. Swift calls it; and being incompatible with those vast designs, to which their courage and ambition prompted them, it might really, in them, be a fault or imperfection. But in the conduct of ordinary life, no virtue is more requisite, not only to obtain success, but to avoid the most fatal miscarriages and disappointments. The greatest parts without it, as observed by an elegant writer, may be fatal to their owner; as Polyphemus, deprived of his eye, was only the more exposed, on account of his enormous strength and stature.
注释摘要
休谟先退一步，设想了一个思想实验中的怪物——一个对他人的幸福与苦难、对社群公益与个人效用都漠然视之的存在，就像经院哲学中那头在两堆干草间无所适从的驴子。然后他话锋一转：只要我们考虑的不是这种虚构的怪物，而是一个真实的、要做出判断的人，情形就截然不同。即便此人心肠自私，即便所牵涉的人与他相隔遥远，他的选择再冷淡，他仍然必然会在有用之物与有害之物之间做出某种偏…