“Why do serious scholars persist in believing in the Aryan invasions?… Why is this sort of thing attractive? Who finds it attractive? Why has the development of early Sanskrit come to be so dogmatically associated with an Aryan invasion?… Where the Indo-European philologists are concerned, the invasion argument is tied in with their assumption that if a particular language is identified as having been used in a particular locality at a particular time, no attention need be paid to what was there before; the slate is wiped clean. Obviously, the easiest way to imagine this happening in real life is to have a military conquest that obliterates the previously existing population! The details of the theory fit in with this racist framework… Because of their commitment to a unilineal segmentary history of language development that needed to be mapped onto the ground, the philologists took it for granted that proto-Indo-Iranian was a language that had originated outside either India or Iran. Hence it followed that the text of the Rig Veda was in a language that was actually spoken by those who introduced this earliest form of Sanskrit into India. From this we derived the myth of the Aryan invasions. QED. The origin myth of British colonial imperialism helped the elite administrators in the Indian Civil Service to see themselves as bringing `pure' civilization to a country in which civilization of the most sophisticated (but `morally corrupt') kind was already nearly 6,000 years old. Here I will only remark that the hold of this myth on the British middle-class imagination is so strong that even today, 44 years after the death of Hitler and 43 years after the creation of an independent India and independent Pakistan, the Aryan invasions of the second millennium BC are still treated as if they were an established fact of history.”

Sir Edmund Leach. "Aryan invasions over four millennia. In Culture through Time, Anthropological Approaches, edited by E. Ohnuki-Tierney, Stanford University Press, Stanford, 1990, pp. 227-245.