3. Caste According to the Rig Veda The duties of Brahmanas, Kshatriyas, and Vaisyas, and of Sudras, too, O terror of your foes! are distinguished according to the qualities born of nature. CHAPTER XVIII, pp. 126-127 http://www.worldfuturefund.org/wffmaster/Reading/Germany/Caste Quotes.htm