Sidgwick presents, and such also that I shall try to present for the opposite view. This proposition that ‘pleasure alone is good as an end,’ the fundamental proposition of Ethical Hedonism, will then appear, in Professor Sidgwick’s language, as an object of intuition. I shall try to shew you why my intuition denies it, just as his intuition affirms it. It may always be true notwithstanding; neither intuition can prove whether it is true or not; I am bound to be satisfied, if I can ‘present considerations capable of determining the intellect’ to reject it.
Now it may be said that this is a very unsatisfactory state of things. It is indeed; but it is important to make a distinction between two different reasons, which may be given for calling it unsatisfactory. Is it unsatisfactory because our principle cannot be proved? or is it unsatisfactory merely because we do not agree with one another about it? I am inclined to think that the latter is the chief reason. For the mere fact that in certain cases proof is impossible does not usually give us the least uneasiness. For instance, nobody can prove that there is a chair beside me; yet I do not suppose that any one is much dissatisfied for that reason. We all agree that it is a chair, and that is enough to content us, although it is quite possible we may be wrong. A madman, of course, might come in and say that it is not a chair but an elephant. We could not prove that he was wrong, and the fact that he did not agree with us might then begin to make us uneasy. Much more, then, shall we be uneasy, if some one, whom we do not think to be mad, disagrees with us. We shall try to argue with him, and we shall probably be content if we lead him to agree with us, although we shall not have proved our point. We can only persuade him by shewing him that our view is consistent with something else which he holds to be true, whereas his original view is contradictory to it. But it will be impossible to prove that that something else, which we both agree to be true, is really so; we shall be satisfied to have settled the matter in dispute by means of it, merely because we are agreed on it. In short, our dissatisfaction in these cases is almost always of the type felt by the poor lunatic in
