We have now completed our detailed review of Poulantzas's theoretical and strategic development and it is time to present some more general reflections on his work. In this chapter I return to a theme introduced in Chapter 1, namely, the three sources of Poulantzas's theoretical and strategic innovations. It will be recalled that these are French philosophy, Italian Marxism, and Romano-German law. I now want to consider their influence on Poulantzas's work in more detail. Particular attention will be paid to the influence of three French philosophers — Sartre, Althusser, and Foucault. I shall also consider how these intellectual sources were brought to fruition through Poulantzas's political involvements.