He [Johann Wolfgang von Goethe] tells me about his philosophical development. Philosophical thinking; without any actual philosophical system. At fir… - Benedictus de Spinoza

...It is because of this that one can admittedly also attribute to Spinozism that calming effect, which, among other things, Goethe praised in it; Spinozism is really the doctrine which sends thought into retirement, into complete quiescence; in its highest conclusions it is the system of perfect theoretical and practical quietism, which can appear beneficient in the tempestuousness of a thought which never rests and always moves...

Spinoza, as George Kline tells us, was a favorite with Russian Marxists: "Spinoza has received more attention from Soviet writers than any other pre-Marxian philosopher with the possible exception of Hegel" (Spinoza in Soviet Philosophy [London: Routledge and Kegan Paul, 1952]). Even before the revolution, Plechanov, a founding father of Russian Marxism and of the Russian Social-Democratic party, took to Spinoza, considering that Marxism itself was a variety of Spinozism, or, a Spinozism stripped of its theological attire. A. M. Deborin, who quotes Plechanov on this point in his essay in Kline's collection, and also his contribution, "Spinozismus and Marxismus", in Chronicon Spinozanum 5 (1927), where he further quotes Plechanov, and declares that "Marxism, the leading revolutionary doctrine of the present, which is materialistic through and through, stems in its philosophical world-view from Spinozism". Deborin founded a whole school around this notion, and one of his colleagues even called Spinoza "Marx without a beard". Stalin later denounced this school — an ultima ratio in Soviet intellectual life — and it declined.

I am utterly amazed, utterly enchanted! I have a precursor, and what a precursor! I hardly knew Spinoza: that I should have turned to him just now, was inspired by "instinct". Not only is his overtendency like mine — namely, to make all knowledge the most powerful affect — but in five main points of his doctrine I recognize myself; this most unusual and loneliest thinker is closest to me precisely in these matters: he denies the freedom of the will, teleology, the moral world-order, the unegoistic, and evil. Even though the divergencies are admittedly tremendous, they are due more to the difference in time, culture, and science. In summa: my lonesomeness, which, as on very high mountains, often made it hard for me to breathe and make my blood rush out, is now at least a twosomeness. Strange!