I shall return to London the day after tomorrow. My doctor exiled me to this seaside place,  where indeed my health has greatly improved. But once again more than two months February, March and half of April have been entirely lost and the completion of my book again postponed. It is enough to drive one mad. I was suffering from carbuncles, not furuncles. This time it was dangerous. Of course you are right in saying that dietetic sins are at the bottom of it. I am too much given to working at night, studying by day and writing by night. That, together with all the worries, private and public, and so long as I am working hard the neglect of a regular diet and exercise, etc, is quite enough to disorder the blood. I received Herr Menke s 100 thalers for the International together with your letter. I have not got the addresses of my French friends in Paris here, but if Herr Menke writes to my friend C Kaub  (33 Rue des trois Couronnes du Temple) he can introduce him to V Schily  (German) and Tolain,  Fribourg,  etc, members of the Paris Committee. The news from Germany is not very gratifying. Prussia is being pushed by Russia (and Bonaparte), Austria by the latter (following more reluctantly in self-defence). Will our philistines at last realise that without a revolution which removes the Hapsburgs and Hohenzollerns (it is unnecessary to speak of the lesser dung-beetles) there must finally come another Thirty Years War and a new partition of Germany! A movement from the Italian side would help Prussia. But if we consider Austria and Prussia in themselves, it is practically certain that the latter would be at a disadvantage, despite all the D ppel-R nommage.  In any case Benedek is a better general than Prince Friedrich Karl. Austria could enforce peace on Prussia single-handed, but not Prussia on Austria. Every Prussian success would be an encouragement to Bonaparte to interfere. While I write these lines to you, Bismarck may have again drawn in his horns. But even that would only postpone the conflict. I think that such a postponement is probable. This German trouble is a piece of extraordinary good luck for Bonaparte. His position is undermined on all sides. But war would give him a new lease of life. Write to me soon, and particularly about German affairs.
Marx-Engels Correspondence 1866