Nietzsche, even more than Schopenhauer, recognized the fact that great mental progress--in the sense that mental progress means an increased capacity for grappling with the conditions of existence--necessarily has to depend upon physical efficiency. In exceptional cases a great mind may inhabit a diseased body, but it is obvious that this is not the rule. A nation in which the average man had but one hand and the duration of life was but 20 years could not hope to cope with even the weakest nation of modern Europe. So it is plain that the first step in the improvement of the race must be the improvement of the body. Jesus Christ gave expression to this need by healing the sick, and the chief end and aim of all modern science is that of making life more and more bearable. Every labor-saving machine ever invented by man has no other purpose than that of saving bodily wear and tear. Every religion aims to rescue man from the racking fear of hell and the strain of trying to solve the great problems of existence for himself. Every scheme of government that we know is, at bottom, a mere device for protecting human beings from injury and death. Thus it will be seen that Nietzsche's program of progress does not differ from other programs quite so much as, at first sight, it may seem to do. He laid down the principle that, before anything else could be accomplished, we must have first looked to the human machine. As we have seen, the intellect is a mere symptom of the will to live. Therefore whatever removes obstacles to the free exercise of this will to live, necessarily promotes and increases intelligence. A race that was never incapacitated by illness would be better fitted than any other race for any conceivable intellectual pursuit: from making money to conjugating Greek verbs. Nietzsche merely states this obvious fact in an unaccustomed form.