They [Jews] belong to the Coloured Races and not the European White Race... which they intend to enervate, subjugate and destroy!

Letter to George Sylvester Viereck (21 April 1926), quoted in John C. G. Röhl, Wilhelm II: Into the Abyss of War and Exile 1900-1941 (Cambridge: Cambridge University Press, 2014), p. 1237.