[b] Fragment on Mackintosh, pp. 375—378.
I will quote one short passage more, in correction of the very vulgar error, that to analyse our disinterested affections and resolve them into associations with the ideas of our own elementary pleasures and pains, is to deny their reality.
“Sir James must mean, if he means anything, that to trace up the motive affections of human nature to pain and pleasure, is to make personal advantage the only motive. This is to affirm, that he who analyses any of the complicated phenomena of human nature, and points out the circumstances of their formation, puts an end to them.
“Sir James was totally ignorant of this part of human nature. Gratitude remains gratitude, resentment remains resentment, generosity generosity in the mind of him who feels them, after analysis, the same as before. The man who can trace them to their elements does not cease to feel them, as much as the man who never thought about the matter. And whatever effects they produce, as motives, in the mind of the man who never thought about the matter, they produce equally, in the minds of those who have analysed them the most minutely.
“They are constituent parts of human nature. How we are actuated, when we feel them, is matter of experience, which every one knows within himself. Their action is what it is, whether they are simple or compound. Does a complex motive cease to be a motive whenever it is discovered to be complex? The analysis of the active principles leaves the nature of them untouched. To be able to assert, that a philosopher, who finds some of the active principles of human nature to be compound and traces them to their origin, does on that account exclude them from human nature, and deny their efficiency as constituent parts of that nature, discovers a total incapacity of thinking upon these subjects. When Newton discovered that a white ray of 321 light is not simple but compound, did he for that reason exclude it from the denomination of light, and deny that it produced its effects, with respect to our perception, as if it were of the same nature with the elementary rays of which it is composed?”[c]
[c] Fragment on Mackintosh, pp. 51, 52.
II.
The reluctance of many persons to receive as correct this analysis of the sentiments of moral approbation and disapprobation, though a reluctance founded more on feeling than on reasoning, is accustomed to justify itself intellectually, by alleging the total unlikeness of those states of mind to the elementary one, from which, according to the theory, they are compounded. But this is no more than what is observed in every similar case. When a complex feeling is generated out of elements very numerous and various, and in a corresponding degree indeterminate and vague, but so blended together by a close association, the effect of a long series of experiences, as to have become inseparable, the resulting feeling always seems not only very unlike any one of the elements composing it, but very unlike the sum of those elements. The pleasure of acquiring, or of consciously possessing, a sum of money (supposed not to be desired for application to some specific purpose,) is a feeling, to our consciousness, very different from the pleasure of protection against hunger and cold, the pleasure of ease and rest from labour, the pleasure of receiving consideration from our fellow-creatures, and the other miscellaneous pleasures, the association with which is admitted to be the real and only source of the pleasure of possessing money. In the case, then, of the moral sentiments, we have, on the one hand, a vera causa or set of causes, having a positive tendency to generate a sentiment, of love for certain actions, and of aversion for certain others; and on the other hand, those sentiments of love and aversion, actually produced. This coincidence between the sentiments and a 322 power adequate to produce them, goes far towards proving causation. That the sentiments are not obviously like the causes, is no reason for postulating the existence of another cause, in the shape of an original principle of our nature.
In a case, however, of so great interest and importance, a rigid adherence to the canons of inductive proof must be insisted on. Those who dispute the theory are entitled to demand that it shall conform strictly to the general law of cause and effect, which is, that the effect shall occur with the cause, shall not occur without the cause, and shall bear some proportion to the cause. Unless it can be shewn that when the effect is not produced, the cause is either absent, or counteracted by some more powerful agency; and unless, when there is any marked difference in the effect, a difference can be shewn in the cause, sufficient to account for it; the theory must give way, or at least, cannot be considered as proved.
The principal case in which the effect is absent, notwithstanding the apparent presence of the cause assigned for it, is anticipated by the author, and provided for after his manner, in the first of the passages quoted from the Fragment on Mackintosh. There are actions (he observes) as beneficial as any others, which yet do not excite the moral sentiment of approbation; but it is because the spontaneous motives to those beneficial acts are in general sufficient: as to eat when we are hungry, or to do a service for which we are to be amply paid. There are, again, actions of a very hurtful character, but such that the spontaneous motives for abstaining from them may be relied on, without any artificial addition: such, in general, are acts destructive of one’s own life or property. But even in these cases the hurtful acts may become objects of moral reprobation, when, in any particular case, the natural deterrents prove insufficient for preventing them.