Ordinatio

Quick Facts

• Title: Ordinatio
• Also known as: Opus Oxoniense, the revised Oxford commentary on the Sentences
• Author: John Duns Scotus
• Date: mainly revised around 1300-1302; left incomplete when Scotus moved to Paris and died young in 1308
• Form: a large scholastic commentary on Peter Lombard's Sentences, the standard medieval theology textbook
• Main topics: God, being, knowledge, individuality, will, freedom, and Christian doctrine
• Main labels: Scholasticism, Franciscan philosophy, metaphysics, theology

The Problem

The Ordinatio is not a neat little book with one simple plot. It is Duns Scotus's huge revised commentary on the Sentences of Peter Lombard, which was the medieval university textbook for advanced theology. Students and masters used the Sentences as a framework for asking almost every major question: What is God? Can reason prove God exists? How can words like "good" or "wise" apply to God? What makes a person free? What makes one thing this individual thing and not just another example of the same kind?

Scotus is working in a world shaped by Thomas Aquinas, Aristotle, Augustine, Avicenna, Franciscan theology, and university debate. He accepts a lot of the shared scholastic project: reason matters, definitions matter, arguments matter, theology should not be a pile of slogans. But he thinks some older answers are not precise enough.

The recurring problem is this: if God is totally beyond creatures, how can human beings think or speak truthfully about God at all? And if the world contains many individual things, how do we explain the difference between a shared nature and a concrete individual? Scotus's answers create the classic Scotist toolkit: univocity of being, formal distinction, haecceity, a strong account of will, and a very careful picture of divine freedom.

In One Minute

The Ordinatio is the main place to go for Scotus's mature philosophy and theology. It takes the normal medieval commentary format and uses it to build one of the sharpest systems in late medieval thought.

The headline idea is that we need some concepts that can apply to both God and creatures in the same basic sense, especially the concept of "being." Scotus is not saying God and creatures are the same kind of thing. He is saying that if "being" means something totally different every time we use it, then arguments about God fall apart. We would not know what we were talking about.

From there, Scotus builds a detailed account of reality. He argues that things have shared natures, but each individual also has a principle of "thisness" that makes it this one. He uses the formal distinction to explain differences that are real but not separable things. He gives the will a strong role in freedom and morality. He also defends famous theological positions, including the Immaculate Conception, by arguing that God's grace could preserve Mary from sin through Christ's merits.

The Main Argument

The Ordinatio does not make one argument from page one to the end. It is a giant set of disputed questions. But the major pattern is clear: Scotus wants philosophy and theology to be exact enough that they can handle God, freedom, and individuality without collapsing into vague language.

Start with God-talk. Many medieval thinkers, especially Aquinas, say that words like "good," "wise," and "being" apply to God and creatures by analogy. "Healthy" is a classic example of analogy: a healthy person, healthy food, and healthy urine are not healthy in exactly the same way, but the meanings are related. Scotus thinks analogy is real, but he argues that it still needs a shared basic concept underneath it. If "being" means one thing for creatures and something utterly unrelated for God, then the sentence "God is a being" becomes nearly useless.

So Scotus defends the univocity of being. "Univocal" means "said in one voice." In plain English: when we say God exists and a tree exists, the word "exists" must have some shared core meaning. Otherwise we cannot reason from creatures to God, deny false claims about God, or even understand what a proof of God's existence is supposed to prove. This shared concept does not make God one creature among others. It is a thin concept, like a basic handle. God is infinite being; creatures are finite beings. The difference is massive, but the basic concept of being is not pure equivocation.

That matters because Scotus wants natural theology to work. Natural theology means using reason, not only scripture, to argue about God. In the Ordinatio, Scotus gives complex arguments for a first cause and an infinite being. The basic idea is that the world of caused things cannot explain itself all the way down. There must be a first source of causal power. Scotus does not treat this as a quick slogan. He carefully distinguishes different kinds of causal series and tries to show that a first cause is not just "first in time" but first in explanatory dependence.

Then comes individuation. Medieval thinkers asked: what makes Socrates Socrates, instead of just another human being? Is it matter? Quantity? Form? Scotus says a shared nature is not enough. Two human beings share human nature, but each is still this individual. He calls the individuating principle haecceity, or "thisness." Thisness is not a visible feature like height, hair, or eye color. It is the metaphysical feature that makes this person this person. If two people had exactly the same measurable traits, they would still not be the same person. Scotus wants an explanation for that.

The formal distinction helps him talk about cases where two aspects are not merely words in our heads, but also not two separable objects. For example, God's justice and God's mercy are not two parts of God sitting next to each other. Scotus still wants to say they are genuinely different perfections. Or take a created thing: its common nature and its thisness are not two detachable pieces, but they are not simply identical either. The formal distinction gives Scotus a middle category: different in the thing, but not split into two independent things.

Scotus also gives the will a strong role. He does not think human freedom is just the intellect seeing the best option and the will automatically following. The will can choose between alternatives. That matters for morality: a morally responsible action is not just a chain reaction from knowledge to behavior. The person has real self-control. This also shapes his view of God. God is supremely rational, but creation is not forced out of God by necessity. God freely wills the created order.

In theology, Scotus uses this same careful machinery to defend the Immaculate Conception. The issue was whether Mary could be preserved from original sin from the first moment of her conception. A common objection said Christ saves people from sin, so Mary must need saving after sin is present. Scotus's answer is simple and powerful: a doctor can cure a disease, but a better doctor can prevent it. Mary is still saved by Christ, but by prevention rather than later rescue. That became one of Scotus's most famous theological legacies.

Key Ideas With Examples

• Univocity of being: "Being" has one shared basic meaning when said of God and creatures. Example: if you say "God exists" and "a stone exists," Scotus thinks "exists" cannot mean two totally unrelated things. If it did, the argument would be wordplay. But God is infinite being and the stone is finite being, so the shared concept does not erase the difference.

• Analogy: words can apply in related but different ways. Example: "good" does not apply to coffee, a law, a person, and God in exactly the same way. Scotus does not reject analogy completely. His point is that analogy needs some shared concept underneath it or else reasoning breaks.

• Formal distinction: a real difference that is less than a separation into two things. Example: God's wisdom and God's justice are not two chunks of God. But they are also not just two human nicknames with no difference in meaning. Scotus uses the formal distinction to say: same reality, different formal aspects.

• Haecceity, or thisness: the principle that makes an individual this individual. Example: two printed copies of the same book may have the same title, words, cover, and layout. They still are not the same physical copy. Scotus thinks individuality needs an explanation deeper than shared kind or common features.

• Common nature: the shared "what-it-is" that many individuals have. Example: Peter and Paul are both human. Their shared human nature is common, but it only exists in actual individuals. Scotus is not saying there is a floating ghost called "humanity" hovering outside people.

• Individuation: the process or principle by which something is one concrete individual. Example: "human" tells you the kind of thing someone is. "This human" picks out the individual. Scotus thinks haecceity explains that final step.

• Infinite being: Scotus's way of naming God as unlimited being. Example: creatures have limits. A tree can be this tall, in this place, with this lifespan. God is not one limited item inside the same inventory. God is being without creaturely limits.

• Natural theology: reasoning about God using the world and the mind, not only revelation. Example: when Scotus argues from caused things to a first cause, he is doing natural theology. Scripture may matter elsewhere, but the argument itself tries to use reason.

• Freedom of the will: the will is not a machine that must always follow the strongest desire or the clearest thought. Example: you can understand that one option is easier and still choose the harder one because you judge it better. Scotus uses this to protect moral responsibility.

• Synchronic contingency: an action can be genuinely free at the very moment it happens because the agent still has the power for an alternative. Example: if you choose to tell the truth, Scotus wants freedom to mean more than "you would have lied if the past had been different." The choice itself is not forced.

• Immaculate Conception: the doctrine that Mary was preserved from original sin from the first moment of her conception. Scotus's concrete example is preventive medicine: being saved from falling into a pit can be an even stronger rescue than being pulled out afterward.

Why It Matters

The Ordinatio matters because it made Scotus one of the central figures of late medieval philosophy. Alongside Aquinas and William of Ockham, he becomes one of the big reference points for scholastic thought after 1200. Later thinkers did not have to agree with him, but they had to deal with his questions.

It matters for metaphysics because Scotus gives unusually precise tools for talking about being, difference, individuality, and possibility. If you care about what makes one thing one thing, or how a general kind relates to particular individuals, Scotus is still relevant.

It matters for philosophy of religion because univocity changes the problem of God-talk. Scotus is trying to avoid two bad options: making God just another creature, or making God so beyond language that theology becomes empty noise. His answer is subtle but practical: keep a shared conceptual handle, then mark the infinite difference.

It matters for ethics because Scotus gives the will real power. He helps push a tradition where freedom means genuine alternative possibility, not just acting according to whatever reason or desire already determines.

It matters for later Catholic theology because his defense of the Immaculate Conception became historically important. The doctrine was defined long after Scotus, but his argument gave later defenders a clean way to say Mary was saved by Christ without first being stained by sin.

Proponents, Critics, and Opponents

Scotus's proponents were the Scotists, especially later Franciscan theologians and scholastic writers who treated him as a master. They used the Ordinatio to develop views on univocity, formal distinction, divine freedom, the will, and Mary's preservation from sin.

Late Scholasticism inherits many of these debates. Scotus becomes a standard authority in university theology, especially where thinkers want more metaphysical precision than they think Thomism provides.

Thomas Aquinas is the major comparison point. Aquinas usually stresses analogy more strongly in God-talk, gives a different account of individuation, and often gives intellect a more guiding role over will. Scotus is not just "anti-Aquinas," but he repeatedly revises Thomist answers.

William of Ockham is a later critic and simplifier. Ockham often rejects Scotus's richer metaphysical machinery, especially formal distinctions and common natures. In broad terms, Scotus wants careful distinctions to preserve reality's structure; Ockham worries that too many distinctions become unnecessary metaphysical clutter.

Modern readers often criticize Scotus for being extremely technical. That criticism is fair at the reading level: the Ordinatio is hard as hell. But the difficulty is not just showing off. Scotus is trying to solve problems where sloppy language changes the answer.

Related Pages

• John Duns Scotus
• Thomas Aquinas
• William of Ockham
• Scholasticism
• Late Scholasticism
• Quodlibetal Questions
• Questions on the Metaphysics
• Metaphysical Disputations