"Expressionism in Philosophy" is both a pivotal reading of Spinoza's work and also a crucial text within the development of Deleuze's own thought. It was the culmination of a series of monographic studies by Deleuze (on Hume, Bergson, Nietzsche, Proust, Kant, and Sacher-Masoch), and it prepared the transition from these abstract treatments of historical schemes of experience to the nomadology of "Capitalism and Schizophrenia". In this extraordinary work, Deleuze reflects on one of the thinkers of the past who most influenced his own sweeping reconfiguration of the tasks of philosophy. For Deleuze, Spinoza, along with Nietzsche and Lucretius, conceived of philosophy as an enterprise of liberation and radical demystification.