requires a form of conduct such that life may be completed in each and in his offspring, not only without preventing completion of it in others, but with furtherance of it in others; and this is the form of conduct most emphatically termed good. "Moreover, just as we saw that evolution becomes the highest possible when the conduct simultaneously achieves the greatest totality of life in self, in offspring, and in fellow-men; so here we see that the conduct called good rises to the conduct conceived as best, when it fulfils all three classes of ends at the same time." Has this evolution been a mistake? The pessimist claims so, the optimist claims not. But there is one postulate in which both pessimists and optimists agree--namely, that it is evident that life is good or bad, according as it does, or does not, have a surplus of agreeable feeling; if a future life is included in the theory of either, the assumption is still the same, that life is a blessing or a curse according as existence, now considered in both worlds, contains more of pleasure or of pain; and the implication is therefore that conduct which conduces to the preservation of self, the family, and society, is good or bad in the same measure. "Thus there is no escape from the admission that conduct is good or bad according as its total effects are pleasurable or painful." So that if self-mutilation furthered life, and picking a man's pocket brightened his prospects, we should regard these acts as good. Approach to such a constitution as effects complete adjustment of acts to ends of every kind is, however, an approach to perfection, and therefore means approach to that which secures greater happiness. "Pleasure somewhere, at some time, to some being or beings, is an inexpugnable element of the conception" of moral aim.