Conclusion
Population should increase more slowly than wealth and resources if progress is to go on. It has done so in the past century, and there is no probability of a too rapid increase in Christendom in the near future. A stationary or declining population, while not desirable, is not an impossibility. But this does not destroy the significance of the fact that there is inherent in humanity a great potential power of increase, the realization of which would be disastrous, the control of which is an important and ever-present condition of the social welfare.
CHAPTER 22
CONDITIONS FOR EFFICIENT LABOR
§ I. OBJECTIVE PHYSICAL CONDITIONS
Subjective and objective factors of efficiency
1. The efficiency of labor, in its broadest sense, is its ability to render services or produce things that minister to welfare. The efficiency of labor is a resultant of many influences. In part it depends on the physical and mental powers of men; in part on things outside of the worker that either stimulate and strengthen him, or give him more favorable conditions in which to work. These are respectively the subjective and the objective factors of efficiency. In its broader sense, therefore, the phrase "efficiency of labor" implies any and every influence that makes for a larger and better supply of goods.
Bounty and goodness of productive agents affect the output of labor