Marxism exists in nineteenth-century thought as a fish exists in water; that is, it ceases to breathe anywhere else.

As quoted by David Macey, The lives of Michel Foucault (1993) p. 177. Citing 'Les Intellectuels et le Pouvoir', Le'Arc 49, 1972, pp. 3-10. Discussion with Gilles Deleuze, (4 March 1972). Reprinted, Le Nouvel Observateur, (8 May 1972) pp. 68-70. Tr. 'Intellectuals and Power', Language, Counter-Memory, Practice, pp. 205-17.