Modern High German

Definition and stakes

Friedrich Kluge,  An Etymological Dictionary of the German Language (1891)

“ Compare Middle High German ze diute, ‘distinct, evident,’ and ‘in German’ (diute, dative singular of diuti, tiute, feminine, ‘exposition, explanation’) ; note too Anglo-Saxon geþeóde, ‘language’ (as the main characteristic of the nation) .
deutsch, adjective, ‘German,’ from the equivalent Middle High German diutsch, tiutsch; the initial d of the Modern High German and Middle High German words is Middle German, the earlier form, teutsch (Middle High German tiutsch) , is Upper German, and was, especially by the UpGer. writers, constantly used till the end of the last century.
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Source: Wikisource

Portrait of F. Max Müller F. Max Müller,  Chips from a German Workshop, Volume 3

“ Although the literature of Germany is chiefly High-German, there are a few literary compositions, both ancient and modern, in the different spoken dialects of the country, sufficient to enable scholars to distinguish at least nine distinct grammatical settlements; in the Low-German branch, Gothic, Saxon, Anglo-Saxon, Frisian, and Dutch; in the High-German branch, Thuringian, Frankish, Bavarian, and Alemannish. ”
Source: Gutenberg

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