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180 ful some of its phases may be, or he must guarantee that his pupils will never be confronted by the situations he disapproves. Either he must abolish war, or teach people how to wage it with the greatest psychic economy; either he must abolish the economic life of man and feed him with Stardust and dew, or he must investigate all the perplexities of economic life and offer patterns of conduct which are applicable in a world where no man is self-supporting. But that is just what the prevailing moral culture so generally refuses to do. In its best aspects it is diffident at the awful complication of the modern world. In its worst, it is just cowardly. Now whether the moralists study economics and politics and psychology, or whether the social scientists educate the moralists is no great matter. Each generation will go unprepared into the modern world, unless it has been taught to conceive the kind of personality it will have to be among the issues it will most likely meet.

Most of this the naïve view of self-interest leaves out of account. It forgets that self and interest are both conceived somehow, and that for the most part they are conventionally conceived. The ordinary doctrine of self-interest usually omits altogether the cognitive function. So insistent is it on the fact that human beings finally refer all things to themselves, that it does not stop to notice that men's ideas of all things and of themselves are not instinctive. They are acquired.

Thus it may be true enough, as James Madison