During the years 1912-1914 I used to ponder perpetually on those problems which related to the policy of the Triple Alliance and the economic policy then being pursued by the German Empire. Once again I came to the conclusion that the only explanation of this enigma lay in the operation of that force which I had already become acquainted with in Vienna, though from a different angle of vision. The force to which I refer was the Marxist teaching and WELTANSCHAUUNG and its organized action throughout the nation.