I will not attempt to describe here the many lessons that I learned in the study of Spinoza, lessons that in several respects laid the foundation of … - Benedictus de Spinoza

In the reproach that Hegel will make to Spinoza, that he ignored the negative and its power, lies the glory and innocence of Spinoza, his own discovery. In a world consumed by the negative, he has enough confidence in life, in the power of life, to challenge death, the murderous appetite of men, the rules of good and evil, of the just and the unjust. Excommunication, war, tyranny, reaction, men who fight for their enslavement as if it were their freedom — this forms the world in which Spinoza lives. The assassination of the De Witt brothers is exemplary for him. Ultimi barbarorum. In his view, all the ways of humiliating and breaking life , all the forms of the negative have two sources, one turned outward and the other inward, resentment and bad conscience, hatred and guilt. "The two archenemies of the human race, Hatred and Re­morse." He denounces these sources again and again as being linked to man's consciousness, as being inexhaustible until there is a new consciousness, a new vision, a new appetite for living. Spinoza feels, experiences, that he is eternal.

Spinoza's true politics is his metaphysics. Against the potentialities of this metaphysics, the polemic of bourgeois thought and all the mystificatory attempts that go under the emblem of "Spinozism" discharge their weapons. But Spinoza's metaphysics is articulated in his political discourse, and some of its potentialities are developed specifically in this field. Here we must try to identify them.

It is well known that Marx was familiar with Spinoza; indeed, he hand-copied whole passages of Spinoza's Tractatus Theologico-Politicus into his notebooks. Less clear is the significance of this fact, and the extent of Spinoza's influence on Marx's thought.