"I have read the Spinoza Dictionary with great care. It is, in my opinion, a valuable contribution to philosophical literature. Spinoza is, among the great classical thinkers, one of the least accessible because of his rigid adherence to the geometric form of argumentation, in which form he obviously saw somewhat of an insurance against fallacies. In fact, Spinoza thereby made it difficult for the reader who all too quickly loses patience and breath before he reaches the heart of the philosopher's ideas. Many have attempted to present Spinoza's thoughts in modern language—a daring as well as irreverent enterprise which offers no guarantee against misinterpretation. Yet throughout Spinoza's writings one will find sharp and clear propositions which are masterpieces of concise formulation."

“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.”