Univocity of being
univocal being
Duns Scotus's claim that being must mean exactly the same thing when said of God and of creatures, with the difference lying in what is added — infinite or finite — because otherwise no argument from the world to its source can avoid equivocating.
In practice
The same demand appears wherever a term has to survive a change of scale. If risk means something different for a portfolio than for a trade, no argument can carry a conclusion from one to the other, and most disagreements about scale are really this.
The common mistake
Reading it as a claim that God and creatures are the same sort of thing. The concept is univocal; the beings are not. What is shared is a word doing one job, not a nature.
This is a dispute about whether reasoning can reach God at all, and it turns on a point of logic rather than piety.
Aquinas had argued that terms apply to God and creatures by analogy — in related senses, with one primary, neither identical nor unrelated. It is an elegant position and it preserves God's transcendence.
Duns Scotus thought it destroys the thing it was built to protect.
The argument
Take any syllogism. Everything that exists has a cause; the universe exists; therefore the universe has a cause.
For that to be valid, exists must mean the same thing in both premises. If it shifts sense between them, the middle term is not one term but two, and the conclusion does not follow. This is not a convention of logic but the whole basis of it — the fallacy has a name, and every first-year student learns to spot it.
Now apply that to theology. If being is merely analogical between God and creatures, then every argument from features of the world to a conclusion about their source contains exactly this shift. The cosmological argument equivocates. So does the argument from design, and so do the five ways.
Scotus's conclusion: at least one concept must be strictly univocal — must apply in the very same sense to God and to creature — or natural theology is not modest, it is invalid. And the concept that must do it is being itself.
What is actually shared
The obvious objection is that this makes God a being among beings, which is the thing analogy was designed to prevent.
Scotus's answer is that univocity holds at the level of the concept, not the nature. Being is a concept so thin it says almost nothing — it picks out whatever is not nothing, and that is all. It is neutral between infinite and finite, necessary and contingent, creator and creature, because it contains none of those determinations.
The difference between God and a creature is then carried by what is added to that bare concept, and the difference is not small: infinite being against finite being. But the addition is a modification of one concept rather than a switch to a different one, which is exactly what the syllogism needs.
So the shared item is a word doing a single job, not a shared kind of existence. Whether that distinction holds under pressure is the whole subsequent argument.
Where it went
The idea did not stay in the thirteenth century, and its afterlife is stranger than its origin.
A univocal concept of being flattens a hierarchy. If being means one thing throughout, then reality is not a graded ladder with God at the top and matter at the bottom, each rung existing in a different and lesser sense. There is one sense of is, and things differ in what they are rather than in how much they are.
That consequence is what Gilles Deleuze took up seven centuries later, calling univocity the decisive moment in the history of metaphysics and making it the banner of a philosophy of immanence — being said in a single sense of everything that is, with difference internal to it rather than a matter of rank. Spinoza is read as the fulfillment of the same move, Meister Eckhart as another route to it.
That is a very long way from Scotus's purpose, which was to keep proofs of God's existence valid. But the mechanism is the same one: once being is said in one sense, the ladder has no rungs.
Why the dispute is worth holding onto
Neither side is obviously right, and the costs are symmetrical.
Analogy protects transcendence and risks invalidating every inference that was supposed to establish it. Univocity protects the inference and risks putting God and the world in one frame. The Thomist reply — that analogy is not equivocation, and that inference can survive ordered senses — is exactly what Scotus denies, and the argument has run for seven hundred years without either side conceding the point.
What makes it worth knowing is the shape. A term that has to stretch across a difference in kind either stretches and loses its grip, or holds and drags the two sides into the same frame. That is a permanent feature of language under strain, and this is its clearest instance.
Concept web
Open the full webQuestions
What does univocity of being mean?
Duns Scotus's claim that the concept of being applies in exactly the same sense to God and to creatures. The difference between them lies in what is added to that concept, infinite or finite, not in a shift in the meaning of being itself.
Why did Scotus reject analogy?
Because a valid syllogism requires its middle term to keep one sense. If being is merely analogical between God and creatures, every argument from the world to God equivocates in the middle term and fails, which would invalidate natural theology rather than protect it.
Why does Deleuze care about univocity?
Because a single sense of being removes the hierarchy in which things exist to greater or lesser degrees. That yields a philosophy of immanence, where difference is internal to being rather than a matter of rank, which Deleuze traced through Scotus and Spinoza.