Spinoza famously begins his Ethics with a definition of “cause of itself” (causa sui). This will become the hallmark of his “Substance”, of which he says there can be only one, and which he identifies with his own heterodox conception of God. Cause of itself would be that the essence of which involves existence.
In Hegel or Spinoza (French ed. 1979), Pierre Macherey writes that “First of all we can show, as Guéroult does, that the concept of causa sui does not really have an initial foundational value for Spinoza: it does not represent a kind of first truth, a principle in the Cartesian sense, from which the entire system can be developed, as if from the starting point of a germ of truth” (p. 16).
“Here we can begin to be astonished: does Hegel ignore that this aporia of beginning — which sets his Logic in motion, this impossibility of grounding the infinite process of knowledge in a first truth which in itself as principle or foundation — is also an essential lesson of Spinozism, the principal objection that he himself opposes to the philosophy of Descartes? In such a sense that it is only… ‘so to speak’, the geometric exposition of the Ethics ‘begins’ with definitions, which for that matter do not have an effective sense, except at the moment when they function in demonstrations or they really produce the effects of truth: Spinozist thinking precisely does not have this rigidity of a construction relying on a base and pushing its analytic to an end point, which would find itself thus limited between a beginning and an end” (p. 17).
For Hegel according to Macherey, “The causa sui is based on a substantial principle that ‘lacks the principle of the personality’. It thus constitutes a substance that cannot become subject, which fails in this active reflection of self, which would permit it to undertake its own liberation in its own process…. This is an arrested and dead spirit” (p. 18).
This is supposed to be the individuality and freedom denying “Oriental” attitude that Hegel with broad brush unfortunately really does attribute to Judaism, Islam, Hinduism, Buddhism, the Roman Empire, Catholicism, the pre-Socratic philosopher Parmenides, and Spinoza, among others. This unfortunate over-the-top anti-anti-subjectivity theme of Hegel’s kept me from really appreciating his work for a long time.
On the other hand, the details of his argument about freedom and subjectivity as affirmative values actually make sense, even to the point of winning over an old sympathizer of French anti-Hegelianism like myself.