The need of fairness in contemporary sociology is due to skipping the population question. If state wants to control the process of natural selection then quantitative and qualitative rules of population are inevitable. In case the balance between population and means of subsistence is not regulated, standard of life will be reduced. In such case, the class of society which lost standard of life will itself reduce population but without keep proportion between death and birth rate. This practice would not be adopted by the under-classes. The recruitment of quality citizens will get affected in this way. The subject however will not seek attention of politicians, military-men and even revolutionaries for being unpopular. All of them will later use religious priests as a tool to condemn such measures of birth-control.