The sociological basis of Bharathiya culture has to be clearly understood.
Mankind falls into four groups, when innate nature and inclinations are considered.
They are named Brahmin, Kshatriya, Vaisya and Sudra. This demarcation is not a selfish, crooked conspiracy designed to make the 'superior' trample upon the 'inferior'. Nor is it the consequence of an envious plot to obstruct human progress. It is best to judge it as a plan to promote the expansion of human achievement by fostering the trends and traits of each person. It is the royal road for the attainment of human progress.