...I love Spinoza, because he, more than any other philosopher, led me to the complete conviction that certain things cannot be explained, that becau… - Benedictus de Spinoza

The Declaration of Independence, that extraordinary document first drafted by Thomas Jefferson, softly echoes Spinoza. John Locke, Spinoza's contemporary — both were born in 1632 — is a more obvious influence on Jefferson than Spinoza was. But Locke had himself been influenced by Spinoza's ideas on tolerance, freedom and democracy. In fact, Locke spent five formative years in Amsterdam, in exile because of the political troubles of his patron, the Earl of Shaftesbury. Though Spinoza was already dead, Locke met in Amsterdam men who almost certainly spoke of Spinoza. Locke's library not only included all of Spinoza's important works, but also works in which Spinoza had been discussed and condemned. It's worth noting that Locke emerged from his years in Amsterdam a far more egalitarian thinker, having decisively moved in the direction of Spinoza. He now accepted, as he had not before, the fundamental egalitarian claim that the legitimacy of the state's power derives from the consent of the governed, a phrase that would prominently find its way into the Declaration. Locke's claims on behalf of reason did not go as far as Spinoza's. He was firm in defending Christianity's revelation as the one true religion against Spinoza's universalism. In some of the fundamental ways in which Spinoza and Locke differed, Jefferson's view was more allied with Spinoza. (Spinoza's collected works were also in Jefferson's library, so Spinoza's impact may not just have been by way of Locke.)

Baruch Spinoza, the excommunicated Jew, made the Jewish cultural position in the West not only tenable, but impregnable. But the same Baruch Spinoza was actually responsible for the cultural anti-Semitism of modern Europe. He shaped the strong anti-Jewish attitude of his greatest admirers, followers, and adepts Herder, Goethe, Hegel, and Fichte. They were outspoken Jew-haters. They admired Spinoza, but with their master hated his race and its world-picture.

The rise of Spinozism in the late eighteenth century is a phenomenon of no less significance than the emergence of Kantianism itself. By the beginning of the nineteenth century, Spinoza's philosophy had become the main competitor to Kant's, and only Spinoza had as many admirers or adherents as Kant.