It is exceedingly doubtful whether we should draw any conclusion in regard to nationality and relationship with other nations from languages. A victorious language is nothing but a frequent (and not always regular) indication of a successful campaign. Where could there have been autochthonous peoples! It shows a very hazy conception of things to talk about Greeks who never lived in Greece. That which is really Greek is much less the result of natural aptitude than of adapted institutions, and also of an acquired language.