Adam Czartoryski

Sir William Jones 17 February 1770 to Prince Adam Czartoryski

''How so many European words crept into the Persian language, I know not with certainty.  Procopius, I think, mentions the great intercourse, both in war and peace, between the Persians and the nations in the north of Europe and Asia, whom the ancients knew by the general name of Scythians.  Many learned investigators of antiquity are fully persuaded, that a very old and almost primæval language was in use among these northern nations, from which not only the Celtic dialect but even Greek and Latin are derived ; in fact we find [pater] and [mater] in Persian, nor is [thugater] so far removed from dockter, or even [onoma] and nomen from nâm, as to make it ridiculous to suppose that they sprang from the same root.  We must confess that these researches are very obscure and uncertain ; (etc).'

    Life of Sir W. Jones, vol. i, p. 239.

The Science of Language 1860 (1891) by Max Müller
New York : Scribner's Sons 1891, vol. i, pp. 223-4.