"The hypothesis, invented to fill the gap, that these ideas were borrowed by barbarous Aryan invaders from the civilised Dravidians, is a conjecture supported only by other conjectures. It is indeed coming to be doubted whether the whole story of an Aryan invasion through the Punjab is not a myth of the philologists."
January 1, 1970
https://en.wikiquote.org/wiki/Indo-Aryan_migrations