ANTONIO LABRIOLA’S THEORY OF HISTORICAL MATERIALISM. The author examines Antonio Labriola’s interpretation of historical materialism in the Saggi intorno alla concezione materialistica della storia (Essays on the Materialistic Conception of History). The author identifies the key element to grasp the relevance of Labriola’s reading of Marxism in the concept of the theory developed in the Saggi. After reviewing the main interpretations of the Saggi, the author focuses on the relationship between history and theory showing up in Labriola’s reading. Firstly, the (...) sense of the theory as an expression of the self-consciousness of a real process is examined by the author in connection with the meaning of dialectics as a self-criticism of historical development. Secondly, the author deals with the method of historical materialism and its impact on the historiographical research. Finally, the author discusses the link between the genesis of historical materialism and its scientific validity, focusing on the problems of class consciousness and ideology for this purpose. (shrink)