	According to Stephanie Jamison and Joel Brereton, a professor of Sanskrit and Religious studies, "there is no evidence in the Rigveda for an elaborate, much-subdivided and overarching caste system", and "the varna system seems to be embryonic in the Rigveda and, both then and later, a social ideal rather than a social reality". Historian R. S. Sharma states that "the Rig Vedic society was neither organized on the basis of social division of labour nor on that of differences in wealth... [it] was primarily organised on the basis of kin, tribe and lineage."