The starting-point for this analysis is a remark made by Andr Lalande, that Durkheim was so enamoured with Schopenhauer's philosophy that his students nicknamed him Schopen. The intellectual context shared by Schopenhauer and Durkheim is explored, especially with regard to the opposition between the id-like will and the mind. Schopenhauer's influence upon Durkheim's contemporaries is examined briefly. Then, this new context for apprehending Durkheim's thought is applied to selected problems in Durkheimian scholarship, problems that have to do with the dualism of human nature, perception, the unconscious and the unity of knowledge relative to the object-subject debate. The implications for sociological theory are also discussed.