Plato thought that the greatest possible happiness of the community as a whole was promoted by its being divided into three orders - rulers, auxiliaries and craftsmen, roughly corresponding to the Brahman, Kshatriya and Vaishya of the Hindu system
Dharma-shastra and Artha-shastra alike study man in society. The former treats of social life from the point of view of religion and morality, the latter from that of utility, expediency and policy