It is right in principle that those should be the best loved who have contributed most to the elevation of the human race and human life. But, if one goes on to ask who they are, one finds oneself in no inconsiderable difficulties. In the case of political, and even of religious, leaders, it is often very doubtful whether they have done more good or harm. Hence I most seriously believe that one does people the best service by giving them some elevating work to do and thus indirectly elevating them. This applies most of all to the great artist, but also in a lesser degree to the scientist. To be sure, it is not the fruits of scientific research that elevate a man and enrich his nature, but the urge to understand, the intellectual work, creative or receptive. It would surely be absurd to judge the value of the Talmud, for instance, by its intellectual fruits. The true value of a human being is determined primarily by the measure and the sense in which he has attained to liberation from the self.