Already, in recognizing the needful subordination of presentative feelings to representative feelings, and the implied postponement of present to future throughout a wide range of cases, some approach toward a secondary principle of guidance has been made. Already, too, in recognizing the limitations which men's associated state puts to their actions, with the implied need for restraining feelings of some kinds by feelings of other kinds, we have come in sight of another secondary principle of guidance. Still, there remains much to be decided respecting the relative claims of these guiding principles, general and special. Some elucidation of the questions involved will be obtained by here discussing certain views and arguments set forth by past and present moralists. § 57. Using the name hedonism for that ethical theory which makes happiness the end of action, and distinguishing hedonism into the two kinds, egoistic and universalistic, according as the happiness sought is that of the actor himself, or is that of all, Mr. Sidgwick alleges its implied belief to be that pleasures and pains are commensurable. In his criticism on (empirical) egoistic hedonism he says: "The fundamental assumption of Hedonism, clearly stated, is that all feelings considered merely as feelings can be arranged in a certain scale of desirability, so that the desirability or pleasantness of each bears a definite ratio to that of all the others."--_Methods of Ethics_, 2d ed., p. 115. And asserting this to be its assumption he proceeds to point out difficulties in the way of the hedonistic calculation; apparently for the purpose of implying that these difficulties tell against the hedonistic theory. Now, though it may be shown that by naming the intensity, the duration, the certainty, and the proximity, of a pleasure or a pain, as traits entering into the estimation of its relative value, Bentham has committed himself to the specified assumption; and, though, it is, perhaps, reasonably taken for granted that hedonism, as represented by him, is identical with hedonism at large; yet it seems to me that the hedonist, empirical or other, is not necessarily committed to this assumption. That the greatest surplus of pleasures over pains ought to be the end of action is a belief which he may still consistently hold after admitting that the valuations of pleasures and pains are commonly vague and often erroneous. He may say that though indefinite things do not admit of definite measurements, yet approximately true estimates of their relative values may be made when they differ considerably, and he may further say, that even when their relative values are not determinable, it remains true that the most valuable should be chosen. Let us listen to him.