PREFACE.
The following work was begun about a year ago, but was dropped as the result of the Revolution of November 9; for the Revolution brought me other obligations than merely theoretical and historical research. It was only after several months that I could return to the work in order, with occasional interruptions, to bring this book to a close.
The course of recent events did not minister to the uniformity of this work. It was rendered more difficult by the fact that, as time went on, the examination of this subject shifted itself to some extent. My starting point represented the central problem of modern Socialism, the attitude of Social Democracy to Bolshevik methods. But since Bolshevism had, of its own accord, referred to the Parish Commune of 1871 as being to some extent its precursor and its prototype, and as having received the sanction of Marx himself, and since the Commune is little known and understood by the present generation, I undertook to draw a parallel between the Commune and the Soviet Republic.
In order to make the Commune comprehensible I had to refer to the Paris Commune, and afterwards to the French Revolution and its Reign of Terror. This gave me fresh means for another parallel to the Soviet Republic; hence an examination of the Commune led to an examination of Terrorism, its origin and its consequences.
