Sunday, 21 December 2025

 Excellent and very subtle follow-up — and you’re right to catch the tension here.

At first glance, the way Spinoza talks about “essence” (essentia) and degrees of being might sound essentialist, as if each thing had a fixed, predetermined nature. But Spinoza’s metaphysics actually redefines essence in a way that undoes classical essentialism.

Let’s unpack that carefully.


1. What “Essence” Means for Spinoza

In Ethics II, Def. 2 and Ethics III, Prop. 7, Spinoza defines essence not as a static “whatness,” but as a dynamic power to act — a conatus:

“Each thing, as far as it can by its own power, strives to persevere in its being.” (E3P6)

So, the essence of a thing = its power of self-maintenance and activity.
It’s not a form imposed by God or nature; it’s a tendency, a vector of self-expression within the whole of substance.

That means essence is immanent, not transcendent. It doesn’t exist apart from the being’s actual power.


2. Essentialism vs. Spinoza’s Immanentism

Classical EssentialismSpinoza’s View
Essence is a fixed form determining what a thing isEssence is the degree and mode of a thing’s power to act
Distinction between essence and existenceEssence = existence expressed as a power
Hierarchical ontology (some beings are “higher”)Flat ontology — all beings are modes of one substance
Individual natures are fixedIndividuals are dynamic, relational, changing expressions

So, Spinoza isn’t an essentialist in the Aristotelian or Cartesian sense.
He preserves the word “essence” but empties it of transcendence, making it a measure of immanent activity.


3. Why He Still Speaks of “Weaker” and “Stronger” Essences

When Spinoza says that some beings have a weaker essence or a greater perfection, he isn’t invoking fixed natures — he’s describing differences in the degree of activity.

  • A stone has less power of acting than a human.

  • A joyful, rational person has more power (and thus a “fuller essence”) than one dominated by passive affects.

These are quantitative and dynamic distinctions, not qualitative essences.
They express a continuum of the same reality — God/Nature’s infinite power.


4. What This Implies

So:

  • Spinoza rejects essentialism in the classical metaphysical sense.

  • But he retains the language of essence to describe the immanent power of being — how much reality a thing embodies.

  • The difference between “weak” and “strong” essences is not about kind, but about degree of activityautonomy, and self-expression.


Summary

Spinoza is not an essentialist, but an immanent realist about essence:
essence = the living intensity of a being’s existence, not a timeless definition of what it is.

In short, he transforms essence from a form into a force.


Would you like me to show how Spinoza’s anti-essentialism contrasts with Aristotle’s and Descartes’ essentialism in a comparative chart (with text quotes from the EthicsMetaphysics, and Meditations)?


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 Excellent and very subtle follow-up — and you’re right to catch the tension here. At first glance, the way Spinoza talks about “essence” ( ...