Yeah!! It just might be that constitutional theories are on the rise. Thanks Rick St. Vick!

Richard of St. Victor is well known for talking about love, and how awesome it is. It might surprise a few people who have only read the popular English translation of Book 3 (the love/ethics? book) that On the Trinity contains six books. The English translation has brought attention to what some contemporary (continental-esque) philosophers would call Richard’s ‘erotics’. What remains to be seen is whatever he says in Books 1, 2, 4, 5, and 6. In this post I’d like to focus on one theme in these other books, which I’ll call Richard’s Constitutional Latin Trinitarianism (= CLT). At the start I must say that I am claiming that Richard suggests a constitutional model of the Trinity and not that he straightforwardly proposes one. At least, Richard can be read to propose such a model–after all, certain later scholastics like Henry of Ghent seem to have read Richard in that way.

In what follows I give a taxonomy  of constitutional Trinitarian theories. I do not say this is an exhaustive taxonomy; nevertheless it helps to isolate the sort of constitutional model that I think can be read off of books 1, 2, 4, and 5.

Genus: Constitutional Models. Every divine person is constituted by two concrete properties, the divine substance and a unique distinguishing personal property.

Species1: For each divine person there is numerically one divinity. (Three persons, three divinities.) E.g., social                   trinitarianism.

Species2: There is numerically one divine substance. (Three persons, one divine substance).

Sub-Species1: Material Constitution Model. Divine persons are the same in virtue of having the divine substance essentially, and the divine substance is like a subject of essential accidental forms.

Difference1: Material Constitution Derivation Model. The Father is identical to the divine substance, and the Son and Holy Spirit have the divine substance derivatively. Hence, there are two essential accidental forms that inhere in the divine substance.

Difference2: Material Constitution Generic Model. No divine person is identical to the divine substance. Hence, every divine person has the divine substance in a unique way analogous to three essential accidental forms of the same substance.

Sub-species2: Non-Material Constitution Model. Divine persons are the same in virtue of having the divine substance essentially, and the divine substance is like an immanent universal nature and not like a subject of accidents.

Difference1: Non-Material Constitution Derivation Model. The Father is identical to the divine substance, and the Son and Holy Spirit each have the divine substance essentially and derivatively in a unique way.

Difference2: Non-Material Constitution Generic Model: No divine person is identical to the divine substance. Every divine person essentially has the divine substance in a unique way.

My proposed interpretation of Richard of St. Victor is as follows:
Genus: Constitution Model
Species: Numerically one divine substance.
Sub-Species: Non-material constitution
Specific Difference: Generic model of the divine substance

I should mention what I take to be a similarity btwn. the material and non-material constitutional models. There is a certain job to be done in each theory to account for how the same divine substance is a constituent of every divine person. This addresses the Christian claim that there is one God, one Creator, one Lord, etc.

On the one hand, the material constitution model proposed by Brower and Rea employs the “sameness without identity” thesis. On the other hand, on my read of Richard’s metaphysics of the Trinity he supposes the divine substance is a singular existing non-divisible universal nature, what Richard Cross has aptly called (in discussing Duns Scotus’s theory) the divine substance’s “being exemplifiable”. If we think the divine substance is exemplifiable, then it cannot be numerically divided up, but it can be a constituent of more than one divine person. Being exemplifiable is a peculiar way that a universal is communicable to many. Another way that a universal is communicable to many is if it is instantiable, then it divisible into numerically distinct occurrences. Richard of St. Victor seems to think of creaturely essences as instantiable, and he in effect denies that the divine substance is instantiable. So, it would seem that we could detect a sameness without identity thesis in Richard too–although it wouldn’t be along the lines of a material constitution model, b/c he doesn’t think of the divine substance like a substance that bears accidental forms (essentially). Nevertheless, on Richard’s view the divine substance is one existing thing that constitutes several divine persons.

Now, what of the personal properties? If a common nature is instantiable, then an instantiated nature entails a non-instantiable personal property; if a common nature is exemplifiable, then the exemplified common nature entails a non-exemplifiable personal property. So, to Richard of St. Victor’s mind, the personal properties are (in effect) non-exemplifiable (what he calls “incommunicable”). Whether or not these personal properties are relations or absolute properties is irrelevant here. What matters is that on Richard’s view every divine person is (in effect) constituted by the divine substance (and since the divine substance is a constituent of every divine person we can say it is ‘a common property’) and by a non-exemplifiable personal property which distinguishes the persons from one another.

One last comparison. On the material and non-material constitutional theories, I take it that both affirm the following:

The name ‘God’ is not a proper personal name, since Father, Son, and Holy Spirit equally satisfy it. Hence, the name ‘God’ does not signify this person, but a certain person, namely the Father, the Son, or the Holy Spirit. (Of course, you could also use the name ‘God’ at once to refer to Father, Son, and Holy Spirit; but this grammar might lead away from a constitution account of the Triune God).

Consider the following suggestive passage from Richard of St. Victor’s On the Trinity Book 4.16 ln.35-49:

It should be kept in mind that existence designates substantial being, but sometimes [a substantial being] from what is common, and other times [a substantial being] from what is an incommunicable property. However, we say a common existence when it is understood to obtain from [1] a common property. But [we say] incommunicable when it is understood to obtain from [2] an incommunicable property. In truth [3] it is proper to the divine substance not to be from some other substance (but only from itself), and in truth [4] it is proper to the person that does not have an origin not to be from some other person. On the one hand, [1.1] [the divine substance] is understood [as] a common property, but on the other hand [4.1] [not-having-an-origin-from-another-person] is an incommunicable property. For it is common to all divine persons to be this substance which is not from some other substance but from itself. Therefore when the divine substance is said or understood to be from itself, [5] the same [property] is common to the existing [persons].

In [1] I take Richard to posit a concrete property; from Book 1 he gives a cosmological argument to the effect that the divine substance can only be numerically one. This property is ‘common’–that is, it is (and so can be) a constituent of more than one divine person.

In [2] I take Richard to posit an incommunicable property, which is a personal property. A personal property belongs (and can belong) only to one person.

In [3] I take Richard to posit that the divine substance as such depends on no other substance for its being. Hence, the singular exemplifiable divine substance has the [abstract] property does not depend on another substance.

In [4] I take Richard to be talking about the Father, and he attributes to the Father the incommunicable property does not depend on any other _person_ for his existence. However, the [abstract] property does not depend on another _substance_ is not an incommunicable property of the Father or any divine person. In [5] Richard makes clear that the [abstract] property not being from another substance is common to every divine person. So, it is not unique to the Father to not depend on another substance.

In [5] Richard concludes by saying the [abstract] property not being from another substance is common to every divine person. The reason it is common to all persons is because the singular divine substance, which is not from another substance, is an essential constituent of every divine person.

By inference, no divine person is identical to the divine substance (cf. [1], [5]). In On the Trinity Book 4.8 Richard makes clear that every divine person is constituted by two properties, a common property and an incommunicable property, or what (borrowing from Richard Cross) I call an exemplifiable immanent universal, and a non-exemplifiable personal property.

There is only one.

Up to this point in Book 3 Richard has told us several things about love (caritas). We have wondered at his saying there isn’t a perfectly good person if he doesn’t love. We have sorted through some necessary conditions for love such that we wonder whether a perfectly good person p must love another person q if p is to be perfectly good. You might say we’ve been contemplating some divine ethics, or aesthetics, or whatever.

In the previous post I suggested how we might interpret what Richard means by saying (two) divine persons are equal and similar to one another, namely the divine persons have the same disposition of love and the same acts of love (see [T4’] and [T5’]). In the next part of Richard’s argument he returns to his metaphysics of the divine substance which he discussed in Books 1 and 2. (In the English translation the term ‘plenitudo’ is translated as ‘fullness’, which might be misleading because it is a technical term in contrast with ‘participation’ (participatio). So I stick with ‘plenitude’.) In Book 3.8 Richard reminds us that

R1: In mutually loved and mutually loving persons, in order that supreme love might exist worthily, there must be in each both supreme perfection and the [plenitude] of all perfection.

In Book 1 Richard distinguished between ‘plenitude’ and ‘participation’.

R2: If p has a plenitude of X, then p has X independently of all other substances.

R3: If p has a participation of X, then p has X dependently on another substance.

Think of the plenitude of X as the original X, and participation as contingently having a likeness of X. So,

R4: If each divine person p and q has the plenitude of supreme love, then p and q have supreme love independently of any other substance.

In Book 1 Richard argued that there can be only one substance that is eternal and causally depends on no other substance; all other existing substances are either sempiternal (roughly co-eternal) causally from another substance (e.g., angels), or temporal and causally from another substance (all material creatures); there is no substance that is temporal and not causally from another substance.

Given R1, R2, and R4, it looks like there are two persons that have numerically the same substance. But what level of generality or individuality is this substance? Some (Aristotelian secondary) substances are quite general like animal, and some are quite specific like human. Even still, there are individual humans like Dale, Joseph, and JT. So, on what level ought we to take the divine substance? Well, none of these. Instead, in Book 2.12, which I consider to be one of the most overlooked and under-appreciated sections of Richard’s De Trinitate, he declares that some substances by definition are singular, non-repeatable, non-instantiable (I explain ‘instantiable’ and ‘non-instantiable’ a bit more in the next post). That is, if we consider the person Daniel, he is constituted by the substance Danielitas (Richard borrows from Boethius’s Platonitas). If a person is constituted by Danielitas, then he is the person Daniel. Having made this distinction Richard applies it to the divine substance by calling it divinitas. If a person is constituted by divinitas, then he is a divine person. (I return to the ‘constitution’ issue in the next post.) Notice that divinitas is a substance and there cannot be further instantiations of it. So, the two divine persons (at this point in the argument) have numerically the same singular substance called divinitas.

Next Richard gives us some rhetorical helps. Consider a human person. On Richard’s view she is composed of two substances: a bodily substance and a rational substance, and yet she is one person. Why think it impossible then if in God there is one substance and yet more than one person? Crazier things happen….

“Explain to me, I implore you, how there is personal unity in so great a dissimilitude and diversity of substances, and I will tell you how there is a substantial unity in so great a similitude and equality of [divine] persons. You say, ‘I do not grasp it; I do not understand; but even if the understanding does not grasp it, nevertheless experience itself per suades me.’ Well said indeed and rightly too! But if experience teaches you that something exists in human nature that is above understanding, should it not also have taught you that something exists above your understanding in divine nature? And so a person can learn from himself, by way of opposites as it were, what he ought to think concerning those things which are proposed to him for believing concerning his God.” (Book 3.10)

Before moving on to Richard’s initial argument for why there must be a trinity and not a duality of divine persons based on what he takes as the nature of perfect love I want to mention one hitherto overlooked issue in contemporary Trinitarian discussions. This issue will certainly be discussed after this current series on Book 3 of Richard’s De Trinitate. That is, Richard’s apparent constitutional Latin trinitarianism [= CLT] which I take as a different stream of Latin trinitarianism than the one Brian Leftow has called “a Latin Trinity” or “the Latin Trinity”. I take Richard and those who rightly interpret him or agree with him (e.g., Henry of Ghent and Duns Scotus) to follow CLT, but those who are less interested in Richard’s own view or just misinterpret him to satisfy Leftow’s LT, or what I would call non-constitutional Latin trinitarianism [= NCLT]. If this is right, as I believe it is, then Brower and Rea have some new (non-Dominican) comrades.