The transition is brought about through a chain of reasoning which is subtle and ingenious in the extreme. Must we not admit that in all purposive action--the only action with which the moralist need concern himself--there is a striving to realize or satisfy desire in the attainment of some object? And if the desires of a mind or self converge upon some object, does not its realization imply the satisfaction or realization of the desires of that mind or self? Furthermore, if our desires have as their root our capacities--for we can desire nothing that it is not in us to desire--is not the realization of desire the realization of capacity? Does it not follow, hence, that every mind or self, in all purposive action, is striving, either blunderingly or with far-sighted intelligence, to attain to self-satisfaction, which means, to the realization of its capacities? Finally, as men are by nature social creatures, how can a man fully realize his capacities without becoming a truly unselfish being? Unselfishness appears to be the inevitable goal of the strivings for self-satisfaction of an unselfish self. 125. WHY AIM TO REALIZE CAPACITIES?--This reasoning appears highly satisfactory in two very different ways. It seems, on the one hand, to stop the mouth of the egoist, who insists that his own advantage is his only proper aim. It assures him that he is throughout seeking his own advantage, when he aims at self-realization. On the other hand, it assures the man to whom egoism appears repellant and immoral, that self- realization implies that one must love one's neighbor as oneself. The immemorial quarrel between self-love and benevolence appears to be adjusted to the mutual satisfaction of both parties. Is the reasoning unassailable? There are two steps in it which appear to demand a closer scrutiny. One is the transition from desire to capacity; the other, the assumption that he who follows an unselfish impulse may properly be said to aim at self-satisfaction, and to exercise no self- denial. As to the first. Our desires may have their roots in our capacities, but desires and capacities are, nevertheless, not the same thing.