One of Althusser's fundamental lessons, and one that remains beyond the controversies about epistemic breaks, the young Marx, and the real Marx, is that Marx's philosophy and politics must be located not at this or that isolated quote or passage, but as traversing the entirety of his work. The condition of immanent causality is a reading of philosophy itself as the immanent unfolding of ideas that are all the more important because they are pervasive, located not in this or that passage, but in the entirety of the work. To some extent Juan Domingo Sánchez Estop's Althusser et Spinoza: Détours et Retours does a similar work on Althusser, searching for Althusser's Spinozism not just in the few well known passages in the ISA essay, Lire Le Capital, and Elements of Self-Criticism where Spinoza is cited by name, but also in the way that Spinoza's thought or practice of philosophy traverses Althusser's work.