(Skt.: āśrama : Brahmacharya [student life], Grihastha [household life], Vanaprastha [retired life] and Sannyasa [renunciation]) and the four primary castes or strata of society (Skt.: varna : Brahmana [priest/teacher], Kshatriya [warrior/politician], Vaishya [landowner/entrepreneur] and Shudra [servant/manual labourer]). This, however, has not been traced to any primary source in early Sanskrit literature.