"..the poisonings of the blood which have befallen our people, especially since the Thrity Years' War, have led not only to a decomposition of our blood, but also of our soul. The open borders of our fatherland, the association with un-German foreign bodies along these frontier districts, but above all the strong and continuious influx of foreign blood into the interior of the Reich itself, due to its continuous renewal, leaves no time for an absolute blening. No new race is distilled out, the racial constituents remain side by side, with the result tht, especially in critical moments in which otherwise a herd habitually gatehrs together, the German people scatters to all the four winds."
-Adolf Hitler, Mein Kampf, page 396