The article of a well-known German social theorist Friedrich Tenbruck, which once provoked a heated debate among Weberian scholars, analyzes the works of Max Weber in terms of their thematic structure and general heuristics. The first section reconstructs the genesis and content of the idea that Economy and Society was the main work of the classic German scholar of sociology, an idea that was initially made popular among scholars by Marianne Weber. The second part is devoted to disenchantment as a fundamental process in the history of religion, the discovery of which is traditionally attributed to Weber’s famous work The Protestant Ethics and the Spirit of Capitalism. The third part analyzes the broad conceptual field used by Max Weber to study Western rationalization. The fourth part critically analyzes the thesis of Western rationalization as Weber’s main, life-long topic, the thesis which was originally introduced by Reinhard Bendix. In the fifth part, an attempt is made to determine the exact place of Economic Ethics of the World Religions in the overall structure of Weber’s work. In the sixth part, the processes of Western rationalization are placed within the general context of Weber’s conception of the universal history understood as a field of tension between ideas and interests. The final section emphasizes the importance of Weber’s writings on the sociology of religion, with Economic Ethics of the World Religions in particular as the core of his entire mature sociology. It also poses the question of the problematic nature of various Weberian notions for contemporary sociology, and points out the persisting validity of Weber’s sociological diagnosis of the time for the analysis of current problems in the perspective of a world-wide historical significance.