"By posing the question of the ‘givenness’ of the object, Marx poses the question of the object itself, of its nature and limits, and therefore of the domain of its existence, since the modality according to which a theory thinks its object affects not only the nature of that object but also the situation and extent of its domain of existence. As an indication, let us adopt a famous thesis of Spinoza's: as a first approximation, we can suggest that Political Economy's existence is no more possible than the existence of any science of ‘conclusions’ as such: a science of ‘conclusions’ is not a science, since it would be the actual ignorance of its ‘premises’ – it is only the Imaginary in action ."

“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.”