Spinoza suffered two experiences which are strongly evident today. Although a Jew, he was excluded from the Jewish community; he also became a victim… - Benedictus de Spinoza

Not only – and despite the academic attempt to depict him as a straightforward ‘rationalist’ – is Spinoza convincingly characterized as ananomaly in his own time and in the ‘timeless time’ of philosophy, as both Negri and Deleuze have affirmed, but the history of Spinoza's reception is also wholly unique. To take some of the more striking, if anecdotal, cases, three great German philosophers – Schelling, Nietzsche and Marx – underwent genuine transformative encounters with the thought of Spinoza. In 1795, Schelling, as a precocious philosopher trying to construct a philosophy that would provide an ‘immanentistic affirmation of the infinite’ and undermine the strictures of dogma, dashed off a letter to his then close friend Hegel, enthusiastically confessing: ‘I have become a Spinozist!’. In 1881, Nietzsche himself, in a letter to Overbeck, remarked on Spinoza: ‘I am amazed, delighted! I have a precursor, and what a precursor!’, before listing his closeness to the fundamental tenets of Spinoza's thought. Marx himself, in his formative years, once composed an entire notebook consisting of a complete rearrangement of one of Spinoza's treatises, and then quixotically entitled it ‘Tractatus Theologico-Politicus by Karl Marx’.

In Spinoza, Hegel finds the fully developed “standpoint of substance” which cannot, however, be the highest standpoint because Being is not yet thought equally fundamentally and resolutely as thinking thinking itself. Being, as substance and substantiality, has not yet developed into the subject in its absolute subjectivity. Still, spinoza appeals always afresh to the whole thinking of German Idealism, and at the same time provokes its contradiction, because he lets thinking begin with the absolute.

Some important intellectual figures of the day made their way to the modest rooms he rented in the Hague in his last years, including the up-and-coming young go-getter Gottfried Wilhelm Leibniz, who would emerge as one of the most dazzling figures in the seventeenth century's impressive lineup of genius. Leibniz spent a few days with Spinoza, conversing on metaphysics. The only written record of their extensive conversations was a slip of paper on which Leibniz had written down, for Spinoza's approval, a proof for God's existence. Leibniz was profoundly influenced by Spinoza's ideas but sought always to conceal his philosophical debt, and is on record as denouncing the philosopher. When a professor of rhetoric at the University of Utrecht, one Johan Georg Graevius, wrote to Leibniz, castigating the Tractatus Theologico-Politicus as a "most pestilential book," whose author "is said to be a Jew named Spinoza, but who was cast out of the synagogue because of his monstrous opinions," Leibniz prudently chimed in with his own diplomatic calumny: "I have read the book by Spinoza. I am saddened by the fact that such a learned man has, as it seems, sunk so low."