This paper explores the nature of Durkheim’s theoretical language concerning the whole and the individual. I look at the questions of holism and individualism throughout his thought, but I particularly focus on ‘L’individualisme et les intellectuels’, where he enters the debate over the Dreyfus affair, espousing the language of intellectual and moral right. I examine the historical and philosophical background of this and the tensions between individualism and socialism, within neglected aspects of French political history. Here a new language of individuality and right was forged, not simply through the pressure of events, but through a re-thinking of socialist holism from within a philosophical tradition.