My main object in this paper is to try to define more precisely the most important question, which, so far as I can see, is really at issue when it is disputed with regard to any predicate of value, whether it is or is not a "subjective" predicate. There are three chief cases in which this controversy is apt to arise. It arises, first, with regard to the conceptions of "right" and "wrong," and the closely allied conception of "duty" or "what _ought_ to be done." It arises, secondly, with regard to "good" and "evil," in some sense of those words in which the conceptions for which they stand are certainly quite distinct from the conceptions of "right" and "wrong," but in which nevertheless it is undeniable that ethics has to deal with them. And it arises, lastly, with regard to certain aesthetic conceptions, such as "beautiful" and "ugly;" or "good" and "bad," in the sense in which these words are applied to works of art, and in which, therefore, the question what is good and bad is a question not for ethics but for aesthetics.
In all three cases there are people who maintain that the predicates in question are purely "subjective," in a sense which can, I think, be fairly easily defined. I am not here going to attempt a perfectly accurate definition of the sense in question; but, as the term "subjective" is so desperately ambiguous, I had better try to indicate roughly the sense I am thinking of. Take the word "beautiful" for example. There is a sense of the term "subjective," such that to say that "beautiful" stands for a subjective predicate, means, roughly, that any statement of the form "This is beautiful" merely expresses a psychological assertion to the effect that some particular individual or class of individuals either actually has, or would, under certain circumstances, have, a certain kind of mental attitude towards the thing in question. And what I mean by "having a mental attitude" towards a thing, can be best explained by saying that to desire a thing is to have one kind of mental attitude towards it, to be pleased with it is to have another, to will it is to have another; and in short that to have any kind of feeling or emotion _towards_ it is to have a certain mental attitude towards it--a different one in each case. Thus anyone who holds that when we say that a thing is beautiful, what we _mean_ is merely that we ourselves or some particular class of people actually do, or would under certain circumstances, have, or permanently have, a certain feeling towards the thing in question, is taking a "subjective" view of beauty.