Surely, Spinoza's parallelism of attributes expressing differently but equivalently one and the same substance was a feat of genius and far superior … - Benedictus de Spinoza

In my youth, Spinoza was a hobgoblin: now he is a saint.

...The influence of Spinozism attained its height in Germany when it overwhelmed Herder, Goethe, and Schiller, the mental giants of Weimar. Weimar was the cradle of modern German culture. It is to the new Germany what Athens was to ancient Hellas, or Jerusalem to ancient Judea, a sea of light and the center of creative genius. From Weimar emanated all the great cultural traditions of the Fatherland, which secured for Germany her proud position in the realm of European culture. Over this spirit of Weimar hovered the genius of Baruch Spinoza. It was here that Spinozism became a dominating influence in the life of the new German culture. But in this process of expansion it was transformed into something different from the original doctrine of the philosopher. The creative geniuses of Weimar could not possibly become reconciled to the mechanistic world-picture from which personality was banished. To Goethe personality was the highest gift of the Gods to man and enjoyed an even higher place in his affections than did Spinozism. The same can be said of many other poets who later embraced some form of Spinozism.

If all that divides Marx from the Classical Economists amounts to the historical character of economic categories, Marx need only historicize these categories, refusing to take them as fixed, absolute or eternal, but, on the contrary, regarding them as relative, provisional and transitory, i.e., as categories subject in the last instance to the moment of their historical existence. In this case, Marx's relation to Smith and Ricardo can be represented as identical with Hegel's relation to classical philosophy. Marx would then be Ricardo set in motion, just as it is possible to describe Hegel as Spinoza set in motion; set in motion, i.e., historicized.