"It is an elementary mistake to equate common Indo-European words with Proto-Indo- European words and to base thereon conclusions concerning the Proto-European Urvolk or Urheimat. Yet this is precisely what has often been done. . . . impassioned linguistic palaeontologists have gone even further. From the existence of certain items of vocabulary in all or a majority of the extant Indo-European languages, and blandly ignoring all the pitfalls just noted, they even fabricated conclusions concerning the social organization, the religion, the mores, the race of the Proto-Indo-European."