"MIA and NIA languages are not, strictly speaking, derived from the language of the Rigveda or from Classical Sanskrit […] these Aryans of the eastern tracts seem to be different from the Midland or Vedic Aryans in many respects―in religious observances, in many practices, in dialect […] these Aryans were distinct from those other Aryans of the West among whom the Vedic culture grew up, distinct in dialect, in religion and in practices... The morphology of Vedic […] retains most faithfully the inflections of primitive Indo-European."