It may be said, perhaps, that though the principle of approbation is not founded upon any perception that is in any respect analogous to the external senses, it may still be founded upon a peculiar sentiment which answers this one particular purpose and no other. Approbation and disapprobation, it may be pretended, are certain feelings or emotions which arise in the mind upon the view of different characters and actions; and as resentment might be called a sense of injuries, or gratitude a sense of benefits, so these may very properly receive the name of a sense of right and wrong, or of a moral sense.
But this account of things, though it may not be liable to the same objections with the foregoing, is exposed to others which may be equally unanswerable.
First of all, whatever variations any particular emotion may undergo, it still preserves the general features which distinguish it to be an emotion of such a kind, and these general features are always more striking and remarkable than any variation which it may undergo in particular cases. Thus anger is an emotion of a particular kind: and accordingly its general features are always more distinguishable than all the variations it undergoes in particular cases. Anger against a man is, no doubt, somewhat different from anger against a woman, and that again from anger against a child. In each of those three cases, the general passion of anger receives a different modification from the particular character of its object, as may easily be observed by the attentive. But still the general features of the passion predominate in all these cases. To distinguish these, requires no nice observation: a very delicate attention, on the contrary, is necessary to discover their variations: everybody takes notice of the former; scarce anybody observes the latter. If approbation and disapprobation, therefore, were, like gratitude and resentment, emotions of a particular kind, distinct from every other, we should expect that in all the variations which either of them might undergo, it would still retain the general features which mark it to be an emotion of such a particular kind, clear, plain and easily distinguishable. But in fact it happens quite otherwise. If we attend to what we really feel when upon different occasions we either approve or disapprove, we shall find that our emotion in one case is often totally different from that in another, and that no common features can possibly be discovered between them. Thus the approbation with which we view a tender, delicate, and humane sentiment, is quite different from that with which we are struck by one that appears great, daring, and magnanimous. Our approbation of both may, upon different occasions, be perfect and entire; but we are softened by the one, and we are elevated by the other, and there is no sort of resemblance between the emotions which they excite in us. But, according to that system which I have been endeavouring to establish, this must necessarily be the case. As the emotions of the person whom we approve of, are, in those two cases, quite opposite to one another, and as our approbation arises from sympathy with those opposite emotions, what we feel upon the one occasion, can have no sort of resemblance to what we feel upon the other. But this could not happen if approbation consisted in a peculiar emotion which had nothing in common with the sentiments we approved of, but which arose at the view of those sentiments, like any other passion at the view of its proper object. The same thing holds true with regard to disapprobation. Our horror for cruelty has no sort of resemblance to our contempt for mean-spiritedness. It is quite a different species of discord which we feel at the view of those two different vices, between our own minds and those of the person whose sentiments and behaviour we consider.
Secondly, I have already observed, that not only the different passions or affections of the human mind which are approved or disapproved of, appear morally good or evil, but that proper and improper approbation appear, to our natural sentiments, to be stamped with the same characters. I would ask, therefore, how it is, that, according to this system, we approve or disapprove of proper or improper approbation? To this question there is, I imagine, but one reasonable answer which can possibly be given. It must be said, that when the approbation with which our neighbour regards the conduct of a third person coincides with our own, we approve of his approbation, and consider it as, in some measure, morally good; and that, on the contrary, when it does not coincide with our own sentiments, we disapprove of it, and consider it as, in some measure, morally evil. It must be allowed, therefore, that, at least in this one case, the coincidence or opposition of sentiment, between the observer and the person observed, constitutes moral approbation or disapprobation. And if it does so in this one case, I would ask, why not in every other? to what purpose imagine a new power of perception in order to account for those sentiments?
Against every account of the principle of approbation, which makes it depend upon a peculiar sentiment, distinct from every other, I would object that it is strange that this sentiment, which Providence undoubtedly intended to be the governing principle of human nature, should hitherto have been so little taken notice of, as not to have got a name in any language. The word moral sense is of very late formation,
