Man's evident failure to make the most out of his material life suggests a study of the elements in each citizen that make him of value to his age and community. What are the measurements of mankind, and why is it that daily some add new treasures to the storehouse of civilization, while others take from and waste the store already accumulated? These are questions of vital import. Many and varied estimates of man's value have been made. Statisticians reckon the average man's value at $600 a year. Each worker in wood, iron or brass stands for an engine or industrial plant worth $10,000, producing at 6 per cent. an income of $600. The death of the average workman, therefore, is equivalent to the destruction of a $10,000 mill or engine. The economic loss through the non-productivity of 20,000 drunkards is equal to one Chicago fire involving two hundred millions. Of course, some men produce less and others more than $600 a year; and some there are who have no industrial value--non-producers, according to Adam Smith; paupers, according to John Stuart Mill; thieves, according to Paul, who says, "Let him that stole steal no more, but rather work." In this group let us include the tramps, who hold that the world owes them a living; these are they who fail to realize that society has given them support through infancy and childhood; has given them language, literature, liberty. Wise men know that the noblest and strongest have received from society a thousandfold more than they can ever repay, though they vex all the days and nights with ceaseless toil. In this number of non-sufficing persons are to be included the paupers--paupers plebeian, supported in the poorhouse by many citizens; paupers patrician, supported in palace by one citizen, generally father or ancestor; the two classes differing in that one is the foam at the top of the glass and the other the dregs at the bottom. To these two groups let us add the social parasites, represented by thieves, drunkards, and persons of the baser sort whose business it is to trade in human passion. We revolt from the red aphides upon the plant, the caterpillar upon the tree, the vermin upon bird or beast. How much more do we revolt from those human vermin whose business it is to propagate parasites upon the body politic! The condemnation of life is that a man consumes more than he produces, taking out of society's granary that which other hands have put in. The praise of life is that one is self-sufficing, taking less out than he put into the storehouse of civilization.