The countries which the Brahmans took possession of, or rather over which they gained their priestly ascendancy, were inhabited by races of men, who are sometimes represented to us by the Brahmans as mere monkeys or bush-men, sometimes as uncouth giants, sometimes, as in the case of Bribu and Hanuman, as useful allies and faithful servants. In the social scheme of the Brahmans, however, these races could never rise beyond the position of a Sudra. Exceptions like that of the Eibhus or Rathakaras, are very scarce and confined to the Vaidik age. No £udra again, as long as Manu’s laws prevailed, could ever rise to the dignity of a twice-born man, and though even as a Sudra, he had caste, yet the distance between him and the poorest Brahman was so wide and unsurmountable in the eyes of both parties, that we can only explain it by a difference of race, such as we find between the Spaniard and the Negro (Müller 41).
Müller, Friedrich Max. “Letter to the Duke of Argyll [Secretary of State for India].“ The Life and Letters of the Right Honourable Friedrich Max Müller, vol. 1, edited by Georgina Adelaide Müller, Longmans, Green And Company, 1902, pp. 357-358.