What the Prussian fools do not see is that the present war is leading just as inevitably to a war between Germany and Russia as the war of 1866 led to the war between Prussia and France. That is the best result I expect from it for Germany. Typical "Prussianism" never has had and never can have any existence except in alliance with and subjection to Russia. And a war No. 2 of this kind will act as the midwife to the inevitable social revolution in Russia.
Letters: Marx-Engels Correspondence 1870