What does once it was necessary that the people should multiply and be fruitful if the race was to survive But now to preserve the race it is necessary that people hold back the power of propagation?

The statement reflects a shift in societal values and priorities regarding reproduction. In the past, increasing population was essential for the survival and continuation of the human race, especially in the face of challenges like famine or war. However, in contemporary society, factors such as overpopulation, environmental concerns, and resource management have led to the belief that controlling reproduction is crucial for sustainability and quality of life. This highlights a transition from quantity to quality in human reproduction and societal health.