...If we had the time we should now go on to present the ingenious theory of organism with which Spinoza focused the general ontological scheme speci… - Benedictus de Spinoza

While Schelling was wrestling with Plato, Spinoza, and Kant, his contemporary Hegel was struggling with Spinoza exclusively. In Hegel, Spinoza reached the height of his influence upon the German mind. Hegel was the most influential, although not the most original, German philosopher since the days of Kant. His system was more an absorption of other systems than an original creation. Therein lies the secret of his influence. He brought all the philosophical tendencies and moods of his time to a conclusion. With him the pantheism of his period attained its highest development and became the conscious and necessary connection of the mind and the world. During his entire philosophical career, Hegel constantly wrestled with Spinoza and for a time was entirely in his clutches. It was while under this influence that Hegel said that in order to refute Spinoza one must first accept him. In his lectures on the history of philosophy he says, "That Spinoza is the main point in modern philosophy, it is either Spinozism or no philosophy at all." He defended Spinoza against the reproach that his philosophy was atheistic and destructive of morality. In his later years, however, when he became more conservative, he changed his attitude toward Spinoza. He said, "that the philosophy of the "Amsterdam hermit" was an antiquated point of view, that his method was 'wooden,' that his proofs were formal tortures, that the attributes did not emanate from the substance and that the modi did not emanate from the attributes." But it was reserved for his old age to discover that Spinozism was philosophically objectionable because it did not tally with Christianity.

Determinateness is negation posited as affirmative and is the proposition of Spinoza: omnis determinatio est negatio. This proposition is infinitely important; only, negation as such is formless abstraction. However, speculative philosophy must not be charged with making negation or nothing an ultimate: negation is as little an ultimate for philosophy as reality is for it truth. Of this proposition that determinateness is negation, the unity of Spinoza's substance — or that there is only one substance — is the necessary consequence. Thought and being or extension, the two attributes, namely, which Spinoza had before him, he had of necessity to posit as one in this unity; for as determinate realities they are negations whose infinity is their unity. According to Spinoza's definition, of which more subsequently, the infinity of anything is its affirmation. He grasped them therefore as attributes, that is, as not having a separate existence, a self-subsistent being of their own, but only as sublated, as moments; or rather, since substance in its own self lacks any determination whatever, they are for him not even moments, and the attributes like the modes are distinctions made by an external intellect.

We know that Spinoza's metaphysics remained widely influential throughout the eighteenth century. A philosopher who received five times more attention than Descartes or Locke in Bayle's Dictionnaire, Diderot and J. d'Alembert's Encyclopédie, and Zedler's Grosses Universal Lexikon was certainly not ignored by the Enlightenment – indeed, could not be.