“It is as if a man were asked, 'What is the use of a hammer?' and answered, 'To make hammers'; and when asked, 'And of those hammers, what is the use?' answered, 'To make hammers again'. Just as such a man would be perpetually putting off the question of the ultimate use of carpentry, so Mr. Wells and all the rest of us are by these phrases successfully putting off the question of the ultimate value of the human life.”