Spinoza has long intrigued me, and for years I've wanted to write about this valiant seventeenth-century thinker, so alone in the world—without a fam… - Benedictus de Spinoza

After 1785 public opinion of Spinoza changed from almost universal contempt to almost universal admiration, largely as a result of the publication of Jacobi's Briefe, in which he revealed Lessing's Spinozism. Lessing was the most admired figure of the Aufklarung, and his credo automatically gave a stamp of legitimacy to every secret Spinozist. One after another the Spinozists could now come out of their closets and form a file behind Lessing. If Lessing was an honorable man and a Spinozist, then they could be too. Ironically, Jacobi's Briefe did not destroy Lessing's reputation, as Mendelssohn feared. It did the very opposite, making him a hero in the eyes of the nonconformists. Lessing made it a fashion to be unorthodox; and to be fashionably unorthodox was to be a Spinozist. Of course, Lessing's credo explains only how Spinozism became respectable. It accounts for why a Spinozist might go public, but not for why he became a Spinozist in the first place. To understand why Spinozism became the credo of so many other thinkers, we have to consider the new situation of the sciences at the close of the eighteenth century. The rise in the fortunes of Spinozism resulted in part from the consequence of the decline of theism and deism.

There is really very little of Machiavelli's one can accept or use in the contemporary world. The one thing I find interesting in Machiavelli is his estimate of the prince's will. Interesting, but not such as to influence me. If you want to know who has influenced me most, I'll answer with two philosophers' names: Spinoza and Kant. Which makes it all the more peculiar that you choose to associate me with Machiavelli.

This endeavour to do a thing or leave it undone, solely in order to please men, we call ambition, especially when we so eagerly endeavour to please the vulgar, that we do or omit certain things to our own or another's hurt : in other cases it is generally called kindliness.