Aileen Kelly, Empiriocriticism: a Bolshevik philosophy? In the first decade of this century a group of Bolshevik theorists attempted to construct a new philosophical basis for marxism with the aid of the empiriocriticism of Avenarius and Mach. Their attempt is usually treated by historians as merely a brief episode in Bolshevik party history. This article examines its significance within the wider framework of the collective psychology of the Russian radical intelligentsia, in which voluntarism was uneasily reconciled with a predilection for deterministic philosophies of history. The empiriocriticist movement can be seen as a final attempt on the part of the members of the intelligentsia to achieve a synthesis of these elements in their out...