The present work is substantially devoted to the establishment of ideas which the writer unfolded in a letter to the German Social Democratic Party assembled at Stuttgart from October 3rd to October 8th, 1898. This letter reads: “The views laid down by me in the series Problems of Socialism have lately been discussed in Socialist papers and meetings, and a request has been made that the Party of German Social Democrats should state its position in regard to them. In case this happens and the Party agrees to the request, I am induced to make the following explanation.