Marx and Singularity attempts to understand the development of Marx's thought as a search for individual realization. Drawing upon the concept of singularity in contemporary French theory-and mapping its own terminology onto Marx's vocabulary-this book challenges those who see no difference between the early and the mature Marx. The productivity of the notion of singularity is argued to be based on the fact that it allows us to highlight the element of individual realization, while stressing at the same time its distance from the modern conception of individuality so central to capitalist ideology. The correlate of singularity is reciprocity-moving and unstable between the individual and the collective -which occurs in the class struggle.