And the chief distinction conveyed by the distinct words ‘duty’ and ‘interest’ seems to be not this source of possible conflict, but the same which is conveyed by the contrast between ‘duty’ and ‘expediency.’ By ‘interested’ actions are mainly meant those which, whether a means to the best possible or not, are such as have their most obvious effects on the agent; which he generally has no temptation to omit; and with regard to which we feel no moral sentiment. That is to say, the distinction is not primarily ethical. Here too ‘duties’ are not, in general, more useful or obligatory than interested actions; they are only actions which it is more useful to praise.
103. (5) A fifth conclusion, of some importance, in relation to Practical Ethics concerns the manner in which ‘virtues’ are to be judged. What is meant by calling a thing a ‘virtue’?
There can be no doubt that Aristotle’s definition is right, in the main, so far as he says that it is an ‘habitual disposition’ to perform certain actions: this is one of the marks by which we should distinguish a virtue from other things. But ‘virtue’ and ‘vice’ are also ethical terms: that is to say, when we use them seriously, we mean to convey praise by the one and dispraise by the other. And to praise a thing is to assert either that it is good in itself or else that it is a means to good. Are we then to include in our definition of virtue that it must be a thing good in itself?
Now it is certain that virtues are commonly regarded as good in themselves. The feeling of moral approbation with which we generally regard them partly consists in an attribution to them of intrinsic value. Even a Hedonist, when he feels a moral sentiment towards them, is regarding them as good-in-themselves; and Virtue has been the chief competitor with Pleasure for the position of sole good. Nevertheless I do not think we can regard it as part of the definition of virtue that it should be good in itself. For the name has so far an independent meaning, that if in any particular case a disposition commonly considered virtuous were proved not to be good in itself, we should not think that a sufficient reason for saying that it was not a virtue but was only thought to be so. The test for the ethical connotation of virtue is the same as that for duty:
