52:2.11

This problem of race improvement is not such an extensive undertaking when it is attacked at this early date in human evolution. The preceding period of tribal struggles and rugged competition in race survival has weeded out most of the abnormal and defective strains. An idiot does not have much chance of survival in a primitive and warring tribal social organization. It is the false sentiment of your partially perfected civilizations that fosters, protects, and perpetuates the hopelessly defective strains of evolutionary human stocks.