THE TRINITY AND GOD THE CREATOR: Commentary on the Summa theologica of St. Thomas

 Preface

 CHAPTER I: QUESTION 27 THE PROCESSION OF THE DIVINE PERSONS

 CHAPTER II: QUESTION 28 THE DIVINE RELATIONS

 CHAPTER III: QUESTION 29 THE DIVINE PERSONS

 CHAPTER IV: QUESTION 30 THE PLURALITY OF THE DIVINE PERSONS

 CHAPTER V: QUESTION 31 OF THE UNITY AND PLURALITY OF THE TRINITY

 CHAPTER VI: QUESTION 32 THE KNOWABILITY OF THE DIVINE PERSONS

 CHAPTER VII: QUESTION 33 THE DIVINE PERSONS IN PARTICULAR—THE PERSON OF THE FATHER

CHAPTER III: QUESTION 29 THE DIVINE PERSONS

IN the beginning we treat of the persons in common, then of the individual persons, and finally of the persons in comparison with the essence and each other. This is the content of the treatise.

Concerning the three persons in common there are four questions:

1. The meaning of the word "person." 2. The plurality of persons. 3. Their differences and similarities. 4. How they can be known by us.

The first question has four divisions: 1. the definition of person; 2. the comparison of person with essence and subsistence; here person is identified with the Greek "hypostasis"; 3. whether the word "person" is used with reference to God; 4. whether in God person signifies relation. The reply will be in the affirmative: person signifies a subsisting relation opposed and incommunicable to others. In the appendix we shall see what is to be said about the absolute subsistence common to the three persons.

In this question it will be made clear that the general idea of person is to be applied to God analogically, not metaphorically but properly, without any distinction or multiplication in the divine nature itself. A great deal of effort was required to make this point clear. In the third century the Latins, like Tertullian, spontaneously declared that there are three persons in God and one substance because the names Father and Son and Holy Ghost are personal. This statement, however, was the source of much difficulty for the Greeks, who used the words ousia and "hypostasis" promiscuously to designate essence, substance, and nature. On other occasions the term prosopon a translation of the Latin persona, designated the mask or theatrical costume which actors donned to impersonate famous personages, and this term was not considered definite enough to express the real distinction between the divine persons. At the time of Origen and St. Dionysius of Alexandria, however, the term "hypostasis" designated a divine person and ousia the divine nature. St. Athanasius also used these terms in this manner. First Article: The Definition Of Person State of the question. In this article inquiry is made for the definition of person, and the definition given by Boetius and commonly accepted is defended. St. Thomas, following the Aristotelian method, goes from the nominal definition to the real definition by a division of the genus of substance and by an inductive comparison of the thing to be defined with similar and dissimilar things. These are the principal rules to be followed in the search for a real definition as proposed in the Posterior Analytics.[277]

In the beginning St. Thomas mentions three difficulties against the Boethian definition, "I person is an individual substance with a rational nature."

1. No individual is defined; for example, Socrates is not defined because a definition expresses an essence that is common to many individuals. The reply will be: If this individual is not definable, individuality can be defined, and individuality pertains to a person.

2. It appears that the adjective "individual" is superfluous because the term "substance" stands for first substance which, for Aristotle, is the individual substance.

3. The third and fourth difficulties are of minor importance. The fifth difficulty is that a separated soul is an individual substance with a rational nature and is not a person.

The reply of St. Thomas affirms that Boetius' definition is acceptable for these reasons:

1. Because of Boetius' authority and because the definition has been accepted generally by theologians.

2. The acceptability of the definition can be rationally explained. St. Thomas assumes that the nominal definition of "person," although it is etymologically derived from impersonation or representation of another's features or gestures, nevertheless designates some individual rational being distinct from others, for example, Socrates, Plato, anyone who is able to say, "I am," or "I act," is called a person. So also all peoples in their grammar commonly distinguish between the first, second, and third person: I, you, he. The ancient jurists added that a person is distinguished from things inasmuch as the person is of his own right, and at one time they taught that in the legal sphere a slave was not a person because he was not of his own right. At the inception of this philosophical inquiry it is sufficient to have a general idea of person: an individual rational being, a singular rational being distinct from others; in French un particulier, in Italian, un tale. Briefly a person is a free and intelligent subject. The nominal definition, which tells what the term signifies, contains intimations of the real definition, which tells what the thing really is.

The real definition is not demonstrated; it is itself the foundation of the demonstration of the properties of the thing defined. The real definition is methodically sought out by a division of the genus and by inductive comparison. In going from the nominal to the real definition of a person, therefore, we must consider the supreme genus of the thing to be defined and this genus must be correctly divided. The article should be read carefully.

The genus of the thing to be defined is substance. On this point St. Thomas notes at the beginning of the body of the article that in the genus of substance the individual is a special instance. Substance itself is individuated by itself whereas accidents are individuated by the subject in which they are. Hence individual substances have some special name; they are called hypostases or first substances or supposita, that is, the first subject of attribution of those things belonging to these substances. For example, this tree is a suppositum as is this dog. Aristotle calls individuals first substances (as Peter, Socrates); second substances are the genera and species, as man, animal, living being. Therefore this distinction is a division into individual and universal substances. Aristotle said that second substances are predicated of first substances as of subjects not because they inhere like accidents but because they express the nature of this particular subject.[278]

Aristotle said that individuals subsist per se and that genera and species do not subsist except in individuals. The suppositum is that which exists separately and acts per se. First substance therefore is the same as the suppositum or the subject of attribution of nature, existence, and accidents, for example, this tree and this dog. Thus the person that we are to define is compared with things dissimilar to it, namely, with accidents, and with genus and species.

In the second part of the body of the article, St. Thomas compares person with things similar to it, that is, with other supposita. "The particular and the individual in rational substances is found to have a special and more perfect mode because it has dominion over its acts and acts per se independently. Therefore the individual substance with a rational nature bears a special name, person. A person is defined, then, as an individual substance with a rational nature.

"This real definition expresses that reality which is vaguely contained in the nominal definition, namely, a rational being, individual and distinct from others, such as Socrates, Plato, I, you, and he."

Confirmation. The validity of this definition is confirmed as we solve the objections.

1. This individual or this person, Socrates, is indeed not defined, but the individuality and the person abstractly considered are defined.

2. In Boetius' definition the adjective "individual" is not superfluous since it signifies that we are dealing with first substance, with the individual or suppositum; in other words, with the real subject which cannot be attributed to another subject.

3. The term "individual" is used to designate that mode of existence which belongs to particular substances, which alone are able to subsist separately per se. Hence "individual" means as much as incommunicable to another suppositum; the person of Peter cannot be predicated of another subject or attributed to another subject.

4. In this definition nature signifies essence.

5. A separated soul is not called a person because it is a part of a human species, whereas "person" signifies the complete whole existing separately, for example, Peter and not his soul, which is attributed to him. Having set up the definition of person, we must now examine the nature of personality. The Nature Of Personality Methodically we go from the nominal definition of personality to its real definition. Here again we observe the laws for establishing a definition laid down by Aristotle and St. Thomas.[279] We begin with the nominal definition not only of person but of personality itself. According to the common sense of men, personality is that by which some subject is a person, just as existence is that by which some subject exists. This may appear to be somewhat ingenuous, yet we have an intimation here that personality, whatever certain writers may say, is not formally constituted by existence.[280] Philosophically the transition to the real definition is made by comparative induction, by comparing this personality which we wish to define with similar and dissimilar things and by correctly dividing the genus of substance to which personality belongs.

Various opinions of Scholastics, who are divided into those who admit or do not admit the real distinction between what a thing is and its being, and between the created essence and being

Denying this distinction, Scotus said that personality is something negative, namely, the negation of the hypostatic union in an individual nature such as Socrates or Peter.[281] Suarez, likewise rejecting this real distinction between created essence and being, said that personality is a substantial mode presupposing the existence of an individual nature and rendering it incommunicable.[282]

Among those who with St. Thomas admit the real distinction we find three opinions.

Cajetan and many other Thomists say that personality is that by which an individual nature becomes immediately capable of existing separately per se. Others with Capreolus say somewhat less explicitly that personality is the individual nature under the aspect of its being.[283] Lastly, Cardinal Billot reduces personality to the being that actuates an individual nature.[284]

Many moderns abandon the ontological approach to this question and consider it from the psychological and moral viewpoint. They declare that personality is constituted either by the consciousness of oneself or by liberty. Consciousness and liberty, however, are only manifestations of the personality; the subject that is conscious of itself must first be constituted as a subject capable of saying. So also the free subject is indeed morally of its own right by liberty, but it also must first be ontologically constituted as I, you, or he.

The true idea of personality. We are looking for the real ontological definition of personality within the genus of substance, because a person is an intelligent and free substance or subject. We proceed progressively by dividing the genus of substance by affirmation and negation and by comparing the personality which we want to define with similar and dissimilar things.

1. Personality, or that by which anything is a person, is not something negative; it is positive just as the person of which it is the formal constituent. If the dependence of an accident is something positive, a fortiori the independence of the subject or the person is positive, that is, that by reason of which the person exists separately per se. Moreover, since the personalities of Socrates and Peter belong to the natural order, they cannot be defined by a denial of the hypostatic union, which is something essentially supernatural and unique. If this were true, it would follow that the personality could not be known naturally.

2. Personality, as something positive, must be something substantial and not accidental because the person is a substance. Hence personality in the proper sense cannot be constituted by consciousness or liberty. Thus personality is compared with dissimilar things and with accidents; we now compare it with similar and related things in the genus of substance.

3. Personality is something substantial but it is not the nature of substance itself, nor this particular nature, but it is this individual human nature, since nature even as individuated is attributed to the person as an essential part. St. Thomas says: "The suppositum signifies the whole which has nature as a formal part that perfects it."[285] We do not say, "Peter is his own nature," because the whole is not the part; it is greater than the part and contains other things besides.

Nor is personality the nature itself under the aspect of being, since the individual nature, Peter for example, is not that which exists but that by which it is a man. That which exists is Peter himself, the person of Peter. We are now asking for that by which something is what it is. Personality therefore is not the individual nature under the aspect of being; otherwise, since there are two natures in Christ, Christ would have two persons and two personalities.

4. Nor is personality Peter's existence because existence is attributed to Peter as a constituted person after the manner of a contingent predicate. Indeed existence is a contingent predicate of every person that has been created or can be created, for no human or angelic person is its own being. Therefore, as St. Thomas says, "In every creature there is a difference between that which is and its being."[286] He also says: "Being follows nature not as something that possesses being but as that by which a thing is; but it follows the person as something that has being."[287] If, therefore, being follows the person constituted as a person, it does not formally constitute the person.

If being formally constituted the created person, the real distinction between the created person and being would be destroyed, and it would no longer be true to say that Peter is not his own being. In other words, that which is not its own being is really distinct from its being, distinct apart from the consideration of our minds. But the person of Peter, as well as his personality which formally constitutes his person, is not Peter's being. Therefore Peter's person and his personality are really distinguished from his being. We shall see this all most clearly in heaven when we see God, who alone is His own being and who alone can say, "I am who am."

5. Personality, therefore, is something positive and substantial, determining an individual nature of substance so that it will be immediately capable of existing separately per se. More briefly, it is that by which a rational subject is what it is. Existence, however, is a contingent predicate of the subject and its ultimate actuality and therefore existence presupposes the personality, which cannot be, as Suarez would have it, a substantial mode following on existence. Personality is, as it were, the terminal point where two lines meet, the line of essence and the line of existence. Properly it is that by which an intelligent subject is what it is. This ontological personality is the foundation of the psychological and moral personality or of the consciousness of self and dominion of self.

This real definition explicitly enunciates what is vaguely contained in the accepted nominal definition: personality is that by which the intelligent subject is a person just as existence is that by which a subject exists. Therefore personality differs from the essence and from the existence which it brings together.

In order to show that the quid rei is confusedly contained in the quid nominis and that the real definition of personality should preserve what is vaguely contained in the nominal definition, Cajetan says: "The word 'person' and similarly the demonstrative personal pronouns like 'I,' 'you,' and 'he,' all formally signify the substance and not a negation or an accident or something extraneous. If we all admit this, why, when scrutinizing the quid rei, that is, when going from the nominal to the real definition, do we depart from the common admission?"[288] Why do we depart from the common sense of mankind, from natural reason, and forget the nominal definition of the person?

It is not surprising, then, that this opinion is accepted by a great many theologians, by Ferrariensis, John of St. Thomas, the Salmanticenses, Goudin, Gonet, Billuart, Zigliara, Del Prado, Sanseverino, Cardinal Mercier, Cardinal Lorenzelli, Cardinal Lepicier, Hugon, Gredt, Szabo, Maritain, and many others.[289]

Certain texts of Capreolus are quoted to show that the person is the nature under the aspect of being.[290] These texts, however, are not really opposed to Cajetan's stand because for Capreolus personality is properly that by which the individual rational nature becomes immediately capable of existence and it is clear that what exists is not the nature of Peter but his person, that is, Peter himself. In other words, personality is that by which the intelligent and free subject is constituted as a subject possessing its own nature, faculties, existence, operations, consciousness, and the actual free dominion over itself.

Finally this theory, accepted by many theologians, is based not only on the texts of St. Thomas cited above but on many others, such as, "The form designated by the word 'person' is not the essence or the nature but the personality."[291] For St. Thomas, therefore, personality is a kind of form or formality or modality of the substantial order. "The name person is imposed by the form of personality which gives the reason for the subsistence of such a nature."[292] Accordingly personality is that by which the rational subject has the right to being separately per se. Thus personality is a substantial mode, antecedent to being, not subsequent to being, because being is the ultimate actuality of a thing or of the subject.

Moreover, St. Thomas taught: "(In Christ) if the human nature had not been assumed by the divine person, the human nature would have had its own personality, and to that extent the divine person is said to have consumed the human nature, although this is not the proper expression, because the divine person by its union impeded the human nature from having its own personality."[293] Thus, according to St. Thomas, personality is distinguished from the individual nature and also from existence because "being follows the person as something that possesses being," and therefore being does not constitute the person.[294] Lastly he says, "The three (divine) persons have but one being," and therefore "the personality is not the same as the being since there are in God three personalities and one being";[295] and "being is not by reason of the suppositum," for a created suppositum is its own being.[296]

We conclude that a person is a free and intelligent subject and that it is predicated analogically of men and angels, and of the divine persons, and that personality is that by which this subject is what it is, namely, that which determines an individual nature to be immediately capable of existing separately per se.[297] Corollaries 1. Personality excludes a threefold communicability. 1. It formally excludes the communicability of nature to another suppositum because the nature already exists in a suppositum. 2. By presupposition and materially it excludes the communicability of the universal to the individual because the person is an individual itself and has an individuated nature. This incommunicability properly pertains to the individuation of nature which takes place in us and in corporeal beings by matter determined by quantity inasmuch as a specific form as received in this matter is no longer communicable.[298] 3. Personality excludes the communicability of the part to the whole because the person is a complete substance.[299] Thus a separated soul is not a person but a principal part of a person. Thus we do not say, "Peter is now in heaven," but "the soul of Peter." On the other hand we say, "After the Ascension, Jesus is in heaven; and after the Assumption, the Blessed Virgin is in heaven and not only her soul." The humanity of Christ is not a person for, while it is individuated and singular, it is not a suppositum or a subject, but it pertains to the suppositum of the incarnate Word.

2. In this way we explain that there is but one person in Christ, that is, one intelligent and free subject, although He has two intellects and two wills. So also we see how in God there are three persons and one nature and one being. We say this because there are three free and intelligent subjects although they have the same nature, the same essential intellect, the same liberty, and the same essential love. Contradiction is avoided by the fact that the three divine persons are relative and that they are opposed to each other, as we shall see below.

3. Personality is quite different from that individuation whose principle is matter determined by quantity. Individuation properly excludes the communicability of the universal to the inferior and it takes place through something lower than the universal, that is, by the matter in which the form is received so that the received form is no longer subject to participation.[300]

On the other hand, personality properly and formally excludes the communicability of nature to another subject or suppositum because the nature is terminated and possessed by one subject existing separately per se, for example, by Peter, and now Peter's human nature cannot be attributed to Paul. St. Thomas says: "Person signifies that which is most perfect in all nature, namely, something subsistent (existing separately per se) in rational nature," whereas our individuation derives from something lower than ourselves, namely, matter.[301]

In Christ, although individuation as in us is derived from matter, the personality is uncreated and differs infinitely from matter. The term "individual" designates that which is inferior in man, that which is subordinate to the species, to society, and to the country; person designates that which is superior in man, that by reason of which man is ordered directly to God Himself above society. Thus society, to which the individual is subordinate, is itself ordered to the full perfection of the human person, as against statism, which denies the higher rights of the human person. We thus arrive not only at a concept which is definite and distinct but at a vital concept of the person immediately subject to God loved above all things. Such is the definition of person. For a simple understanding of the dogma it is sufficient to say that the person is a free and intelligent subject and is predicated analogically of man, the angels, and the three divine persons, for each of these is a free and intelligent subject.[302] Second Article: Whether Person Is The Same As Hypostasis, Subsistence, And Essence State of the question. In this article we establish the equivalence of the Latin term persona with the Greek term "hypostasis". St. Thomas, as is clear from his replies to the second and third difficulties, realized the difficulties arising on this point between the Greeks and Latins. The Greeks refused to accept the term "person" because for them it signified the mask which actors in the theater wore to represent famous personages; and since an actor successively wore masks to impersonate different heroes, they sensed the danger of Sabellianism, according to which the divine persons are merely different aspects of God acting ad extra.

On the other hand, the Latins rejected the term ""hypostasis"" because it often designated substance and thus implied the danger of Arianism, which taught that there were in God three substances, some of which were subordinate substances.

These difficulties were eliminated by St. Basil's clear distinction between the meaning of the terms ousia and "hypostasis". Ousia, he said, signifies the substance which is numerically common to the three persons; "hypostasis" signifies that which is individual and real so that there is a real distinction between the persons. Then the Greek formula of three hypostases was accepted as equivalent to the Latin of three persons. Nevertheless the Greek formula could not be expressed in the Latin translation because the terms "subsistence" and "suppositum" were not yet in use.

These terms, the correlative abstract and concrete forms, did not exist in the fourth century; St. Hilary and St. Augustine did not know them. The term "subsistence" was invented by Rufinus about 400.[303] Rufinus derived the term "subsistence" from subsistere just as "substance" came from substare. This was logical enough because the Latins had said that the divine persons subsist. The word ""hypostasis"" was finally accepted by the Latins, and the union of the two natures in Christ was even called the hypostatic union.[304]

Boethius, writing at the beginning of the sixth century, did not appreciate Rufinus, happy discovery and taught that if the Church would permit it, absolutely speaking we could say that there were three substances in God. In this present article, St. Thomas strove to place a favorable interpretation on Boethius' words, and out of this came the complexity of this article. Thus in explaining Boethius' words, in his reply to the second difficulty, he says: "We say that in God there are three persons and subsistences as the Greeks say there are three hypostases. But since the term 'substance' which in its proper significance corresponds to '"hypostasis"' is used equivocally by us, sometimes meaning essence and sometimes "hypostasis", the Latins in order to avoid any error preferred to translate '"hypostasis"' by the term 'subsistence', rather than the term 'substance.'" This was happily done by Rufinus.

But Boethius, misunderstanding the matter, distinguished differently between subsistere and substare when he said that substare referred to accidents and therefore only individuals were substances with respect to their accidents, whereas only genus and species, which do not have accidents, could be said to subsist. Here was Boethius, principal error: he inverted Rufinus, formulas and said that in God there were three substances and one subsistence (or substantial nature).

Rufinus, however, had said that in God there were three subsistences and one substance. Thus Boethius gave a false meaning to the word "subsistence" invented by Rufinus. Rusticus, a deacon of the Roman Church, restated the true meaning of the word. From that time ""hypostasis"" has been translated by "subsistence" and later by "suppositum" for the concrete form. Indeed the concrete correlative of subsistentia is not subsistere but suppositum just as the concrete correlative of "personality" is "person."

The complexity of this present article can be attributed to these fluctuating translations and especially to Boethius, unfortunate interference. The first two difficulties proposed at the beginning of the article are therefore not objections, because after explanations are made they conclude as does the article itself. The two arguments in the sed contra are objections taken from Boethius, who misunderstood the meaning of ""hypostasis"."

Reply. In spite of these objections the conclusion of the article is clear: in the genus of rational substances the term "person" signifies what these three terms, "hypostasis", substance, things in nature (res naturae) signify in the whole genus of substances, namely, the suppositum or the first subject of attribution. We recall that substance is said to be twofold: second substance, or ousia, and first substance, which has four names: suppositum, subsistence, "hypostasis", and thing in nature.

The first name, "uppositum," signifies the logical relation of the subject of attribution to the predicate; the three others signify the thing itself and not the logical relation. Thus "subsistence," taken concretely, signifies the first substance as existing separately per se; "thing in nature" signifies first substance as it is placed under some common nature; and "hypostasis" as it is placed under accidents. It should be noted that "hypostasis" in the concrete is the same as first substance, and subsistence is now understood in the abstract and corresponds to personality and not to person.

The following should be kept clearly in mind: The concrete correlative of subsistence is the suppositum as personality corresponds to person. Certain authors, attempting to identify subsistence with the existence of substance, say that the concrete correlative of subsistence is to subsist (subsistere), just as to exist is the correlative to existence. This is erroneous because the suppositum, of which subsisting and existing are predicated as contingent predicates, ought to have in itself that by which it is a suppositum, and this is subsistence, or if it is a rational being, personality. Clearly the concrete correlative of personality is not "to subsist" but the person. Actually, the abstract correlative of "to subsist" is the existence of the substance, just as the existence of the accident corresponds to inhering itself.[305]

Briefly this article may be reduced to this: In the genus of rational substances person designates the same as "hypostasis" or suppositum in the whole genus of substances, namely, that which exists separately per se.

St. Thomas' replies to the second, fourth, and fifth difficulties are favorable interpretations of certain texts of Boethius, who wrote rather inaccurately on this question. Third Article: Whether The Term Person Can Be Applied To God The reply is in the affirmative as pertaining to faith as is clear from the Athanasian Creed: "For there is one person of the Father, another of the Son, another of the Holy Ghost."[306]

The body of the article gives the theological argument, which may be presented as follows. Every perfection is to be attributed to God. But "person" signifies what is most perfect in all of nature, namely, a free and intelligent subject, or a subsisting being with a rational nature. Therefore it is proper to speak of God as a person, and this in the most excellent manner. God is subsisting being itself with an intellectual nature and, therefore, whatever pertains to the person belongs to Him formally and eminently. For this reason theistic philosophers speak of a personal God in opposition to the pantheists, who say that God is immanent in the universe in which He operates not freely but necessarily.

In his reply, St. Thomas states that God is the highest and most intelligent being per se. To the second difficulty he replies that the term "person" in its formal being most properly belongs to God since the dignity of the divine nature exceeds every dignity. His third reply shows he understood the difficulty that arose between the Greeks and the Latins. In his reply to the fourth objection, he says: "Individual being cannot belong to God so far as matter is the principle of individuation but only so far as individual being denotes incommunicability." This was also noted by Richard of St. Victor. Thus the person of the Father is incommunicable to the Son; thus also it is explained that the humanity of Christ, which is individuated by matter, is not a person because it is communicated to the suppositum of the divine Word, in which it exists.

From this, however, a problem arises. If the person denotes incommunicability in the divine nature, how can the Father communicate His nature to the Son? This problem will be solved in the following articles. Fourth Article: Whether In God The Term Person Signifies Relation State of the question. In this question this article is of major importance. In the foregoing article we saw that in God, who is the most simple being, there can be no plurality except that of real relations mutually opposed. According to revelation, however, there are several persons in God. We must show, therefore, that a divine person can be constituted by a real divine relation. All the difficulties mentioned at the beginning of the article are reduced to this: person signifies something absolute and not relative. This becomes evident from the following considerations. 1. Person is predicated with reference to itself and not to another; 2. in God person is not really distinguished from the essence; 3. person is defined as an individual substance with a rational nature; 4. in men and angels person signifies something absolute and, if it signifies relation in God, it would be used equivocally of God and of men and angels.

Reply. The divine person signifies relation as subsisting. Boethius says," very name referring to persons signifies a relation." Thus Father signifies the relation to the Son, Son signifies the relation to the Father, and Holy Ghost signifies the relation to the Spirators. "By the relative names of the persons the Father is referred to the Son, the Son to the Father, and the Holy Ghost to both, for while we speak of the three persons relatively we believe in only one nature or substance... . For that which is the Father is not with reference to Himself but to the Son,... but, on the other hand, when we say God, this is said without reference to another."[307] "In the relation of the persons we discern number... . In this number alone do the persons indicate that they are referred to each other."[308] "In God all things are one and the same except where there is opposition of relation."[309]

In the body of the article St. Thomas presents three opinions and then offers the most acceptable opinion.

1. The opinion of the Master of the Sentences: even in God the term "person" in the singular may be taken to mean something absolute, but in the plural it is taken to mean something relative, contrary to the teaching of the heretics, especially the Arians, who said that the three persons are subordinate substances. St. Thomas replied that if the term "person" even in God in the singular signifies something absolute, we are not sufficiently removed from the error of the Arians. By affirming the plurality of persons we might be multiplying something absolute.

2. The term "person" in God signifies essence directly and relation indirectly, because, as it is said, the person is said to be one per se. This, however, is false etymology. This opinion is corrected by the following.

3. The term "person" in God signifies relation directly and essence indirectly. This opinion, St. Thomas remarks, approaches more closely to the truth.

Then St. Thomas offers proof for his own opinion: the divine person signifies relation as subsisting.

Person in general signifies an individual (or distinct) substance with an intellectual nature, or a "hypostasis" distinct from others. But in God there are no real distinctions except according to the relations of origin, which are subsisting.[310] Therefore in God person signifies a distinct relation as subsisting.

This is to say, in general there are two things in the person: the distinction by incommunicability (I, you, he) and subsistence in the intellectual nature. But these two things are not found in God except in the real relations mutually opposed and thus really distinct, whose "esse in" is substantial and entirely the same as subsisting being itself.

More briefly we may say that person in any nature means a subsisting being distinct from others. But in God there is no distinction except according to the real relations, which are subsisting. Therefore in God person signifies relation not as relation but as subsisting. In this way we preserve the analogy of person in God, namely, a subsisting being distinct from others. In another place St. Thomas says: "The signified relation is included indirectly in the meaning of divine person, which is nothing else than a subsisting being in the divine essence distinct by relation,"[311] or a subsistence distinct by relation in the divine nature.

Difficulty. The person renders a nature incommunicable to another suppositum. But the subsisting relation of paternity does not render the divine nature incommunicable. Therefore this subsisting relation of paternity does not constitute a person.

Reply. I distinguish the major: an absolute person renders a finite nature incommunicable, I concede; a relative person renders a divine nature incommunicable, this I subdistinguish: as of itself, I concede; in other respects, I deny. Thus the divine nature as terminated by paternity is incommunicable and in God there is only one Father and the Father alone enunciates. In an equilateral triangle the first angle constructed renders the surface incommunicable as of itself only, but this surface is communicated to the other opposite angles.

This reply will appear less clear than the objection because the objection arises from our inferior mode of knowledge, whereas the reply is taken from the height of the ineffable mystery and therefore requires profound meditation and mature thought. It is not necessary for theology to show that all the objections made against the mysteries are evidently false; it is sufficient to show that they are not necessary and cogent, in the words of St. Thomas.[312]

At the end of the body of the article several corollaries are presented.

First corollary. As the Deity is God, so the divine paternity is God the Father.[313] In God there is nothing except the Deity for there are no individuating notes from matter, no accidents, nor a being distinct from essence. Hence God and Deity are the same and the Father and the paternity are the same. On the other hand, Socrates is not his humanity, which is only an essential part; the whole is not the part, but it is greater than its part.

It is not perfectly true to say that Michael is his own Michaelity because, although the Michaelity is individuated of itself and not by matter, yet there are in Michael accidents and being besides his essence.

Second corollary. In God person signifies relation directly as subsisting and essence indirectly.

Third corollary. Inasmuch as the divine essence is subsisting per se, it is signified directly by the term person, and relation as relation, not as subsisting, is signified indirectly.

Reply to the first objection. The term "person" even in God refers to Himself inasmuch as it signifies relation, not as relation, but as subsisting; for example, the Father as subsisting refers to Himself although as a relation He refers to the Son.

Reply to the third objection. In our understanding of an individual substance, that is, a distinct and incommunicable substance, we understand a relation in God, as was said in the body of the article.

Reply to the fourth objection. In God the analogy of person is preserved, for it is something subsisting and distinct from others (a free and intelligent subject) which is proportionally predicated of the divine persons, angelic and human persons. But the three divine persons understand by the same essential intellection and they love by the same essential love.

First doubt. Are the divine persons constituted only by the subsisting relations opposed to each other or also by everything that belongs to them?

Against Praepositivus and Gregory of Rimini, the Thomists reply that the divine persons are constituted as persons by the fact that they are distinguished from each other. But they are distinguished from each other by nothing except the opposite subsisting relations, otherwise they would differ by essence and in essence. It has been defined, however, that they are the same in essence. Hence the Council of the Lateran declared: "The Most Holy Trinity is individual according to the common essence and separate according to the personal properties."[314] The Council of Florence says: "The divine persons differ by their properties."[315]

Confirmation. What is common to the three persons cannot constitute a special person distinct from the others. But all things that are absolute in God are common to the three persons.

Second doubt. Are the divine persons constituted by the active and passive origins, as St. Bonaventure thought, or according to the opinion attributed to him?

The reply is in the negative, for by its essential concept person denotes a fixed and permanent being since it is the ultimate terminus of nature, rendering it incommunicable and subsisting. But origin is essentially conceived as becoming; active origin is conceived as the influx and emanation from a principle, and passive origin is conceived as the path or tendency to a terminus. Active origin presupposes the person from which it issues, and passive generation is conceived as something supposed prior to the constitution of the person of the Son, according to our manner of thought.[316]

Third doubt. Is the person of the Father constituted by innascibility, as Vasquez thought?

The reply is in the negative, because innascibility taken formally is merely the negation of a principle and thus cannot constitute the person of the Father, which, since it is real, must be constituted by something real and positive. If, however, innascibility is taken fundamentally, the basis implied is either something absolute, and then it cannot constitute a particular person, or it is something relative, and then it can be nothing else than the relation of paternity. Vasquez had proposed this opinion to solve the following difficulty. The Special Difficulty In The Latin's Concept In this present article we can examine a particular difficulty arising from the concept of the Latin theologians. The problem is as follows: The relation which follows upon active generation cannot constitute the person who begets. But the relation of paternity follows upon active generation, for it is founded on it. Therefore this relation of paternity cannot constitute the person of the begetting Father. The person must first exist before it begets, because operation follows being.

This objection is somewhat clearer than the reply because the difficulty arises from our imperfect manner of thinking, whereas the reply must come from the heights of this ineffable mystery.

In examining this difficulty, St. Thomas says: "The special property of the Father, His paternity, can be considered in two ways. First, as it is a relation and as such according to our understanding it presupposes the notional act of generation because the relation as such is founded on the act. Secondly, as it constitutes the person, and as such it is understood as prior to the notional act just as a person in act is understood as prior to the action."[317]

This is to say that the relation, of paternity for example, as a relation actually referring to its terminus does indeed presuppose active generation and is founded on it, just as the relation of filiation is founded on passive generation. But the active generation itself presupposes the begetting person and its personal property, that is, paternity, as it constitutes the person of the Father. There is here no contradiction because this relation of paternity is not considered under the same aspect, but first as a relation actively looking toward the terminus and founded on active generation, and secondly as the proximate principle (principium quo) of active generation or as constituting the begetting person.

As in the equilateral triangle the first angle constructed, while it is alone, is itself a geometric figure, that is, an angle, but it does not yet refer to the other two angles not yet constructed.

In explaining St. Thomas' teaching, Thomists have offered two replies to this objection. Some Thomists reply by distinguishing the major: the relation of paternity, considered as referring to something, follows generation; but considered as in something, it precedes generation. But the difficulty remains since the "esse in" is something common to the divine relations and the three persons and therefore it cannot constitute a particular person as distinct from the others and as incommunicable. The "esse in" does not confer incommunicability; only the "esse ad" does this.

Other Thomists (Cajetan, John of St. Thomas, and Billuart) reply as follows to this important difficulty. Even with regard to the "esse ad" the relation of paternity as that by which the divine essence is modified in actu signato precedes the active generation, although it follows it with regard to the "esse ad" in the actual exercise (in actu exercito), that is, in the actual exercise of that respect after the manner of the actual tendency and attainment of the terminus. Hence these Thomists say that the relation of paternity, as that by which the divine essence is modified in actu signato, constitutes the person of the Father; and the relation of paternity as that which in the exercise of the act (in actu exercito) is founded on active generation supposes the person of the Father as already constituted. Thus the doctrine of St. Thomas is maintained: the persons are constituted by the relations as subsisting and not as relations. And thus the notional act of active generation has its origin in the person of the Father as subsisting and in the relation itself as really incommunicable.

I insist. Relative things are the same in nature and in knowledge. But the Father, as has been said, is understood before generation. Therefore the Son also is understood before generation, which is absurd.

Reply. I distinguish the major: relative things are the same in nature and knowledge in actu exercito, I concede; in actu signato, I deny. I contradistinguish the minor: the Father is understood before generation in actu signato as a subsisting person, I concede; in actu exercito with regard to the Son, this I deny.

In other words, the ad as such denotes the respect to another either by the opposition of the terminus or by the attainment of the terminus. In the relation of opposition itself we may consider either the opposition between two persons or the exercised relation of one to another; for example, I refer to you, but I am distinct from you. So the Father refers to the Son, but the Father is not the Son.

I insist. The first thing in the "esse ad" is to refer in act to the terminus rather than being a relative incommunicable entity. Therefore the difficulty remains.

Reply. I deny the antecedent. Just as the first thing is for whiteness to be constituted in itself as that by which something is made white before the wall is whitened (ut quod), for the form precedes its formal effect not by the priority of time but of causality.

I insist. The opposition in a relation arises from the reference, since it is the opposition of one relative thing to the correlative. Therefore the reference in act is prior to the opposition to the terminus. And the difficulty remains.

Reply. I distinguish the antecedent: the exercised opposition in the relation arises from the exercised reference (in actu exercito), I concede; the entitative opposition arises from the reference in actu exercito, this I deny. The entitative opposition arises in the actu signato. Similarly, whiteness in actu signato is opposed to blackness in actu signato, and whiteness as actually existing in a wall actively opposes blackness existing in another wall. In a word, the form precedes its formal effect not in time but by nature.

The following analogies illustrate this point. Sanctifying grace is thought of first as it is in itself before we think of it as driving out sin and making the soul pleasing to God. The rational soul is thought of first in itself as a nature before we think of it as conferring a specific being and life on the body. Similarly a relation first affects the subject as that by which (ut quo) and later it refers exercite to the terminus, for first a thing must be constituted in itself before it tends toward something else. We cannot conceive of it as attaining its terminus before it is in itself.

In human generation, in that indivisible instant in which the rational soul is created and united to the body, the ultimate disposition of the body in preparation for the soul precedes the creation of the soul in the genus of material or dispositive causality; but it follows the creation of the soul (as a property of the soul) in the genus of formal, efficient, and final causality. For it is the rational soul itself which in this instant of time gives to the body not the penultimate but the ultimate disposition to itself; and this disposition is then a property of the soul. When this property of the soul in its body is destroyed by death, the soul is separated from the body. Here there is no contradiction because the ultimate disposition precedes and follows the form but not in the same genus of causality. Thus the causes are causes of one another but in different classes and thus there is no vicious circle.

In the same way the phantasm precedes the idea in the line of material causes, but the phantasm completely assumed to express sensibly an idea does not exist prior to the idea. When a man succeeds in discovering a new idea, in the same moment he often discovers the appropriate phantasm for the sensible expression of that idea.

So also the motion of sensibility precedes and follows volition under a twofold aspect. Again, at the end of a period of deliberation the final practical judgment precedes the free choice, which it influenced, but at the same time it is the free choice which made the practical judgment final by accepting it.

In the contract of marriage the consent of the man is expressed in a word, but that word has no effect unless it is accepted by the woman. After the woman accepts, the marriage is definitively ratified, but not before. Here the consent of the man precedes as consent and, although it is pronounced relatively to the woman, it does not actively affect the consent of the woman unless later the woman consents and expresses that consent. These analogies are to some extent explicative of the matter.

We return to St. Thomas, teaching. The divine person is constituted by the relation as subsisting and not as a relation. Thus the generation of the Son terminates in the person of the Son but not as that which is the object of the relation. For, as the philosophers say, movement or generation does not terminate per se and directly in a relation. In God, therefore, generation terminates in the person of the Son as subsisting, or in the relation of filiation as it is subsisting being, but not as a relation. Such was St. Thomas, distinction which without too much complication was able to solve this difficulty as much as it could be solved by men.

Fourth doubt. Whether in God, prior to the consideration of relations and persons, there is some absolute subsistence besides the three relative subsistencies.

Theologians are not agreed. The Thomists commonly reply in the affirmative; many other theologians reply in the negative. Durandus taught that an absolute subsistence was sufficient without relative subsistences; but this is rejected by most theologians.

The common opinion of Thomists is that God, considered in Himself, prior to the persons and relations, is subsisting, that He is therefore not only the Deity but also God, subsisting being itself, and for that reason He is understood as having intellect, will, and the power to create ad extra. But God is not said to be subsisting with regard to Himself by a relative subsistence. Therefore He subsists by an absolute subsistence.

Confirmation. Subsistence implies the highest perfection, namely, the most perfect manner of being. But God, prior to our consideration of the persons, possesses every perfection because He is pure act, existing because of Himself. Therefore He derives no perfection from the relations, because if paternity would be a new perfection that perfection would be lacking in the Son and thus the Son would not be God.

Confirmation. Antecedently to the consideration of the persons, God possesses being or the existence of that which is. But such existence presupposes subsistence or that by which something is what it is. In other words, prior to the consideration of the persons God is that which is, indeed He is subsisting being itself. This seems to be the opinion of St. Thomas: "The divine nature exists having in itself subsistence apart from any consideration of the distinction of the persons."[318] On other occasions St. Thomas said, "In God there are many subsisting beings if we consider the relations, but only one subsisting being if we consider the essence."[319] This opinion seems to follow upon the concept of the Latins, who begin, not with the three persons, but with the divine nature.

First objection. If we place an absolute subsistence in God we have a quaternity.

Reply. This I deny because this absolute subsistence confers the perseity of independence from any other sustaining being but not the perseity of incommunicability. Thus there are not four persons. It is certain that, considered in Himself, God is singular, since He is not a universal. In Him, God and the Deity are one. From revelation it is certain that in itself the divine nature is communicable by the Father to the Son and to the Holy Ghost.

Second objection. According to the councils and the Fathers subsistence is the same as "hypostasis". But no theologian admits the existence of an absolute "hypostasis".

Reply. The councils and the Fathers did not deal with this scholastic question and, when they spoke of the divine persons, they did indeed say that subsistence is the same as the "hypostasis" but they did not intend to exclude the absolute subsistence of which we are now speaking.

Third objection. In order that the divine nature subsist independently and at the same time be incommunicable the personalities or relative subsistences are sufficient. For if in God there were one personality, this would be able to confer both kinds of perseity, of independence and incommunicability. Why cannot this perseity be conferred by three persons?

Reply. If in God there were one personality, this would be an absolute perfection and thus it would confer both the perseity of independence and incommunicability. This one personality would really be that absolute subsistence of which we are speaking and in addition it would confer incommunicability. But such is not the case because it has been revealed that in God there are three persons. Besides it would be incongruous that this most perfect manner of existence in God would depend on the relations which do not add any new perfection.

I insist. In rational creatures personality confers both the perseity of independence and incommunicability. Therefore it should all the more do so in God.

Reply. In rational creatures personality is an absolute subsistence, not relative as in God. In God perfections are derived only from the essence; incommunicability comes only from the relations.

Final objection. That which derives its existence from another does not exist in itself. But the divine nature, prior to the relations or persons, seeks its existence in them. Therefore it does not exist in itself.

Reply. I distinguish the major: that which seeks its existence in another because of its own indigence, I concede; that which seeks its existence in another because of its infinite fecundity, I deny. I contradistinguish the minor: the divine nature does not seek existence in the relations or persons because of any indigence, so that it can exist by itself. It is already able to exist by itself because it is subsisting being itself, but because of its infinite fecundity it seeks to exist in the persons as the precise terms of its existence and not as sustainers of its own being.

I insist. The divine nature cannot exist without the relations; therefore it is complemented by them because of its own indigence in existence.

Reply. I distinguish the antecedent: the divine nature cannot exist without the relations because it is supremely fecund, I concede; because it is deficient, I deny. It is itself subsisting being. In the same way omnipotence cannot exist without the possibility of creatures, not because of its own indigence but because of its fecundity. So also the Father enunciates the Word not because of any need but because of His fecundity.

Final doubt. Why is not the absolute subsistence, modified by the relations, sufficient without relative subsistences, as Durandus taught?

Reply. 1. Because the councils and the Fathers have often stated that each divine person has its proper subsistence. St. Thomas declared: "As we say that in God there are three persons and three subsistences, so the Greeks say there are three hypostases."[320]

2. According to the Catholic faith there are three persons in God. But a person is formally constituted by subsistence, which confers incommunicability. Therefore in God there are three relative subsistences.

3. Otherwise no basis would exist for incommunicability nor would the principle of active generation and active spiration be established.

Confirmation. If there were only one subsistence, modified by the three relations, we could not truly say that there are three persons in God, just as we could not say that there are three gods because there is one nature modified by the three relations. We would have to confess one person alone just as we confess one God. In order to multiply a substantive noun such as person we must also multiply the form, which is the personality. We return then to St. Thomas, statement that the divine persons are constituted by relative subsistences, as they are subsisting and opposed to each other. Thus we have three relative subsistences.

The Father is then the principle quod of active generation; the Son with the Father is the principle quod of active spiration. God, antecedent to any consideration of the persons, is the principle quod of the essential actions, which are common to the three persons, such as essential intellection and essential love as distinct from notional love (active spiration) and personal love (the Holy Spirit).

Confirmation. The humanity of Christ is united to the Word in His personal subsistence, which supplies the place of the created subsistence; otherwise the three divine persons would be incarnate.

From the foregoing we may be able better to solve a difficulty that often comes to mind. Personality renders a nature incommunicable to another suppositum; but paternity does not render the divine nature incommunicable to the Son, on the contrary it communicates it to the Son; therefore paternity cannot constitute the person of the Father, and, therefore, there cannot be three persons in God.

Reply. I distinguish the major: personality renders a nature incommunicable as personified, I concede; personality renders a nature incommunicable in itself, I subdistinguish: in created beings, where personality is absolute, I concede; in God, where personality is relative, I deny. Thus the person of the Father renders the divine nature incommunicable as personified (there is but one Father in God), but it does not render the divine nature incommunicable in itself. Indeed the Father, inasmuch as He implies the relation to the Son, communicates to the Son the divine nature and thus manifests the infinite fecundity of the divine nature.

We have sufficiently examined the questions about the processions of the divine persons (question 27), the divine relations (question 28), and the divine persons considered absolutely and in common (question 29). We now turn to the plurality of the persons, and after this lengthy explanation of the fundamental ideas we may now proceed more rapidly. We shall now study the corollaries that can be inferred from the foregoing and the correct terminology to be used in speaking of these truths. But we will not neglect to gather the precious gems of knowledge which can be found in the following articles. Recapitulation Of Question Twenty-Nine Article 1. A person is a free and intelligent subject or an individual substance with a rational nature.

Article 2. Person is the same as the "hypostasis" of an intellectual nature.

Article 3. Since person signifies that which is most perfect in all nature, namely, a subsistence with a rational or intellectual nature, it is proper that this term be used with reference to God analogically and in the most excellent manner. Thus in Sacred Scripture the Father and the Son, as is clear, are personal nouns and so also is the Holy Ghost, who is mentioned with them.

Article 4. The divine persons, distinct from one another, are constituted by the three divine subsisting relations opposed to one another, namely, paternity, filiation, and passive spiration.

The reason for this is that "there is no distinction in God except by the relations of origin opposed to one another." Since these relations are not accidents but subsisting, we find in them two requisites for a person: subsistence and incommunicability, or distinction. Thus the three divine persons are three intelligent and free subjects, although they understand by the same essential intellection, love themselves necessarily by the same essential love, and freely love creatures by the same free act of love.

Therefore the paternity in God is personality, although it is relative, as are also filiation and passive spiration. The divine paternity on its part renders the divine nature incommunicable, although the divine nature is still communicable to the other two persons, just as the top angle of the triangle on its part renders its surface incommunicable, although this surface can still be communicated to the other two angles. And as God is His own deity, so the Father is His own paternity, the Son is His own filiation, and the Holy Ghost is His own (quasi-) passive spiration.