"But how to write about a man who lived such a contemplative life marked by so few striking external events? He was extraordinarily private, and he kept his own person invisible in his writing. I had none of the material that ordinarily lends itself to narrative—no family dramas, no love affairs, jealousies, curious anecdotes, feuds, spats, or reunions. He had a large correspondence, but after his death his colleagues followed his instructions and removed almost all personal comments from his letters. No, not much external drama in his life: most scholars regard Spinoza as a placid and gentle soul—some compare his life to that of Christian saints, some even to Jesus."

“Humanam impotentiam in moderandis et coercendis affectibus servitutem voco; homo enim affectibus obnoxius sui juris non est sed fortunæ in cujus potestate ita est ut sæpe coactus sit quanquam meliora sibi videat, deteriora tamen sequi.”

“Meum institutum non est verborum significationem sed rerum naturam explicare”

“Hic conatus aliquid agendi et etiam omittendi ea sola de causa ut hominibus placeamus, vocatur ambitio præsertim quando adeo impense vulgo placere conamur ut cum nostro aut alterius damno quædam agamus vel omittamus; alias humanitas appellari solet.”

“veritas norma sui et falsi est”

“Ordo et connexio idearum idem est ac ordo et connexio rerum”

“[B]y Natura naturans we must understand what is in itself and is conceived through itself, or such attributes of substance as express an eternal and infinite essence, that is … God, insofar as he is considered as a free cause. But by Natura naturata I understand whatever follows from the necessity of God's nature, or from God's attributes, that is, all the modes of God's attributes insofar as they are considered as things which are in God, and can neither be nor be conceived without God.”