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St. Thomas Aquinas
Summa Theologica

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  • Aquin.: SMT XP Q[1] Out. Para. 1/2 SUPPLEMENT (XP): TO THE THIRD PART OF THE SUMMA THEOLOGICA OF ST. THOMAS AQUINAS GATHERED FROM HIS COMMENTARY ON BOOK IV OF THE SENTENCES (QQ[1] -99) OF THE PARTS OF PENANCE, IN PARTICULAR, AND FIRST OF CONTRITION (THREE ARTICLES)
      • Aquin.: SMT XP Q[55] Out. Para. 1/1 - OF THE IMPEDIMENT OF AFFINITY (ELEVEN ARTICLES)
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Aquin.: SMT XP Q[55] Out. Para. 1/1 - OF THE IMPEDIMENT OF AFFINITY (ELEVEN ARTICLES)

We must consider next the impediment of affinity. Under this head there
are eleven points of inquiry:

(1) Whether affinity results from matrimony?

(2) Whether it remains after the death of husband or wife?

(3) Whether it is caused through unlawful intercourse?

(4) Whether it arises from a betrothal?

(5) Whether affinity is caused through affinity?

(6) Whether affinity is an impediment to marriage?

(7) Whether affinity in itself admits of degrees?

(8) Whether its degrees extend as far as the degrees of consanguinity?

(9) Whether marriages of persons related to one another by consanguinity
or affinity should always be dissolved by divorce?

(10) Whether the process for the dissolution of like marriages should
always be by way of accusation?

(11) Whether witnesses should be called in such a case?


Aquin.: SMT XP Q[55] A[1] Thes. Para. 1/1

Whether a person contracts affinity through the marriage of a
blood-relation?

Aquin.: SMT XP Q[55] A[1] Obj. 1 Para. 1/1

OBJ 1: It would seem that a person does not contract affinity through
the marriage of a blood-relation. For "the cause of a thing being so is
yet more so." Now the wife is not connected with her husband's kindred
except by reason of the husband. Since then she does not contract
affinity with her husband, neither does she contract it with her
husband's kindred.

Aquin.: SMT XP Q[55] A[1] Obj. 2 Para. 1/1

OBJ 2: Further, if certain things be separate from one another and
something be connected with one of them, it does not follow that it is
connected with the other. Now a person's blood relations are separate
from one another. Therefore it does not follow, if a certain woman be
married to a certain man, that she is therefore connected with all his
kindred.

Aquin.: SMT XP Q[55] A[1] Obj. 3 Para. 1/1

OBJ 3: Further, relations result from certain things being united
together. Now the kindred of the husband do not become united together by
the fact of his taking a wife. Therefore they do not acquire any
relationship of affinity.

Aquin.: SMT XP Q[55] A[1] OTC Para. 1/2

On the contrary, Husband and wife are made one flesh. Therefore if the
husband is related in the flesh to all his kindred, for the same reason
his wife will be related to them all.

Aquin.: SMT XP Q[55] A[1] OTC Para. 2/2

Further, this is proved by the authorities quoted in the text (Sent. iv,
D, 41).

Aquin.: SMT XP Q[55] A[1] Body Para. 1/1

I answer that, A certain natural friendship is founded on natural
fellowship. Now natural fellowship, according to the Philosopher (Ethic.
viii, 12), arises in two ways; first, from carnal procreation; secondly,
from connection with orderly carnal procreation, wherefore he says
(Ethic. viii, 12) that the friendship of a husband towards his wife is
natural. Consequently even as a person through being connected with
another by carnal procreation is bound to him by a tie of natural
friendship, so does one person become connected with another through
carnal intercourse. But there is a difference in this, that one who is
connected with another through carnal procreation, as a son with his
father, shares in the same common stock and blood, so that a son is
connected with his father's kindred by the same kind of tie as the father
was, the tie, namely of consanguinity, albeit in a different degree on
account of his being more distant from the stock: whereas one who is
connected with another through carnal intercourse does not share in the
same stock, but is as it were an extraneous addition thereto: whence
arises another kind of tie known by the name of "affinity." This is
expressed in the verse:


Marriage makes a new kind of connection,

While birth makes a new degree,


because, to wit, the person begotten is in the same kind of relationship,
but in a different degree, whereas through carnal intercourse he enters
into a new kind of relationship.

Aquin.: SMT XP Q[55] A[1] R.O. 1 Para. 1/1

Reply OBJ 1: Although a cause is more potent than its effect, it does
not always follow that the same name is applicable to the cause as to the
effect, because sometimes that which is in the effect, is found in the
cause not in the same but in a higher way; wherefore it is not applicable
to both cause and effect under the same name or under the same aspect, as
is the case with all equivocal effective causes. Thus, then, the union of
husband and wife is stronger than the union of the wife with her
husband's kindred, and yet it ought not to be named affinity, but
matrimony which is a kind of unity; even as a man is identical with
himself, but not with his kinsman.

Aquin.: SMT XP Q[55] A[1] R.O. 2 Para. 1/1

Reply OBJ 2: Blood-relations are in a way separate, and in a way
connected: and it happens in respect of their connection that a person
who is connected with one of them is in some way connected with all of
them. But on account of their separation and distance from one another it
happens that a person who is connected with one of them in one way is
connected with another in another way, either as to the kind of
connection or as to the degree.

Aquin.: SMT XP Q[55] A[1] R.O. 3 Para. 1/1

Reply OBJ 3: Further, a relation results sometimes from a movement in
each extreme, for instance fatherhood and sonship, and a relation of this
kind is really in both extremes. Sometimes it results from the movement
of one only, and this happens in two ways. In one way when a relation
results from the movement of one extreme without any movement previous or
concomitant of the other extreme; as in the Creator and the creature, the
sensible and the sense, knowledge and the knowable object: and then the
relation is in one extreme really and in the other logically only. In
another way when the relation results from the movement of one extreme
without any concomitant movement, but not without a previous movement of
the other; thus there results equality between two men by the increase of
one, without the other either increasing or decreasing then, although
previously he reached his actual quantity by some movement or change, so
that this relation is founded really in both extremes. It is the same
with consanguinity and affinity, because the relation of brotherhood
which results in a grown child on the birth of a boy, is caused without
any movement of the former's at the time, but by virtue of that previous
movement of his wherein he was begotten; wherefore at the time it happens
that there results in him the aforesaid relation through the movement of
another. Likewise because this man descends through his own birth from
the same stock as the husband, there results in him affinity with the
latter's wife, without any new change in him.


Aquin.: SMT XP Q[55] A[2] Thes. Para. 1/1

Whether affinity remains after the death of husband or wife?

Aquin.: SMT XP Q[55] A[2] Obj. 1 Para. 1/1

OBJ 1: It would seem that affinity does not remain after the death of
husband or wife, between the blood-relations of husband and wife or "vice
versa." Because if the cause cease the effect ceases. Now the cause of
affinity was the marriage, which ceases after the husband's death, since
then "the woman . . . is loosed from the law of the husband" (Rm. 7:2).
Therefore the aforesaid affinity ceases also.

Aquin.: SMT XP Q[55] A[2] Obj. 2 Para. 1/1

OBJ 2: Further, consanguinity is the cause of affinity. Now the
consanguinity of the husband with his blood-relations ceases at his
death. Therefore, the wife's affinity with them ceases also.

Aquin.: SMT XP Q[55] A[2] OTC Para. 1/1

On the contrary, Affinity is caused by consanguinity. Now consanguinity
binds persons together for all time as long as they live. Therefore
affinity does so also: and consequently affinity (between two persons) is
not dissolved through the dissolution of the marriage by the death of a
third person.

Aquin.: SMT XP Q[55] A[2] Body Para. 1/1

I answer that, A relation ceases in two ways: in one way through the
corruption of its subject, in another way by the removal of its cause;
thus likeness ceases when one of the like subjects dies, or when the
quality that caused the likeness is removed. Now there are certain
relations which have for their cause an action, or a passion or movement
(Metaph. v, 20): and some of these are caused by movement, through
something being moved actually; such is the relation between mover and
moved: some of them are caused through something being adapted to
movement, for instance the relations between the motive power and the
movable, or between master and servant; and some of them result from
something, having been moved previously, such as the relation between
father and son, for the relation between them is caused not by (the con)
being begotten now, but by his having been begotten. Now aptitude for
movement and for being moved is transitory; whereas the fact of having
been moved is everlasting, since what has been never ceases having been.
Consequently fatherhood and sonship are never dissolved through the
removal of the cause, but only through the corruption of the subject,
that is of one of the subjects. The same applies to affinity, for this is
caused by certain persons having been joined together not by their being
actually joined. Wherefore it is not done away, as long as the persons
between whom affinity has been contracted survive, although the person
die through whom it was contracted.

Aquin.: SMT XP Q[55] A[2] R.O. 1 Para. 1/1

Reply OBJ 1: The marriage tie causes affinity not only by reason of
actual union, but also by reason of the union having been effected in the
past.

Aquin.: SMT XP Q[55] A[2] R.O. 2 Para. 1/1

Reply OBJ 2: Consanguinity is not the chief cause of affinity, but union
with a blood-relation, not only because that union is now, but because it
has been. Hence the argument does not prove.


Aquin.: SMT XP Q[55] A[3] Thes. Para. 1/1

Whether unlawful intercourse causes affinity?

Aquin.: SMT XP Q[55] A[3] Obj. 1 Para. 1/1

OBJ 1: It would seem that unlawful intercourse does not cause affinity.
For affinity is an honorable thing. Now honorable things do not result
from that which is dishonorable. Therefore affinity cannot be caused by a
dishonorable intercourse.

Aquin.: SMT XP Q[55] A[3] Obj. 2 Para. 1/1

OBJ 2: Further, where there is consanguinity there cannot be affinity;
since affinity is a relationship between persons that results from carnal
intercourse and is altogether void of blood-relationship. Now if unlawful
intercourse were a cause of affinity, it would sometimes happen that a
man would contract affinity with his blood-relations and with himself:
for instance when a man is guilty of incest with a blood-relation.
Therefore affinity is not caused by unlawful intercourse.

Aquin.: SMT XP Q[55] A[3] Obj. 3 Para. 1/1

OBJ 3: Further, unlawful intercourse is according to nature or against
nature. Now affinity is not caused by unnatural unlawful intercourse as
decided by law (can. Extraordinaria, xxxv, qu. 2,3). Therefore it is not
caused only by unlawful intercourse according to nature.

Aquin.: SMT XP Q[55] A[3] OTC Para. 1/2

On the contrary, He who is joined to a harlot is made one body (1 Cor.
6:16). Now this is the reason why marriage caused affinity. Therefore
unlawful intercourse does so for the same reason.

Aquin.: SMT XP Q[55] A[3] OTC Para. 2/2

Further, carnal intercourse is the cause of affinity, as shown by the
definition of affinity, which definition is as follows: Affinity is the
relationship of persons which results from carnal intercourse and is
altogether void of blood-relationship. But there is carnal copulation
even in unlawful intercourse. Therefore unlawful intercourse causes
affinity.

Aquin.: SMT XP Q[55] A[3] Body Para. 1/1

I answer that, According to the Philosopher (Ethic. viii, 12) the union
of husband and wife is said to be natural chiefly on account of the
procreation of offspring, and secondly on account of the community of
works: the former of which belongs to marriage by reason of carnal
copulation, and the latter, in so far as marriage is a partnership
directed to a common life. Now the former is to be found in every carnal
union where there is a mingling of seeds, since such a union may be
productive of offspring, but the latter may be wanting. Consequently
since marriage caused affinity, in so far as it was a carnal mingling, it
follows that also an unlawful intercourse causes affinity in so far as it
has something of natural copulation.

Aquin.: SMT XP Q[55] A[3] R.O. 1 Para. 1/1

Reply OBJ 1: In an unlawful intercourse there is something natural which
is common to fornication and marriage, and in this respect it causes
affinity. There is also something which is inordinate whereby it differs
from marriage, and in this respect it does not cause affinity. Hence
affinity remains honorable, although its cause is in a way dishonorable.

Aquin.: SMT XP Q[55] A[3] R.O. 2 Para. 1/1

Reply OBJ 2: There is no reason why diverse relations should not be in
the same subject by reason of different things. Consequently there can be
affinity and consanguinity between two persons, not only on account of
unlawful but also on account of lawful intercourse: for instance if a
blood-relation of mine on my father's side marries a blood-relation of
mine on my mother's side. Hence in the above definition the words "which
is altogether void of blood-relationship" apply to affinity as such. Nor
does it follow that a man by having intercourse with his blood-relation
contracts affinity with himself, since affinity, like consanguinity,
requires diversity of subjects, as likeness does.

Aquin.: SMT XP Q[55] A[3] R.O. 3 Para. 1/1

Reply OBJ 3: In unnatural copulation there is no mingling of seeds that
makes generation possible: wherefore a like intercourse does not cause
affinity.


Aquin.: SMT XP Q[55] A[4] Thes. Para. 1/1

Whether affinity is caused by betrothal?

Aquin.: SMT XP Q[55] A[4] Obj. 1 Para. 1/1

OBJ 1: It would seem that affinity cannot be caused by betrothal. For
affinity is a lasting tie: whereas a betrothal is sometimes broken off.
Therefore it cannot cause affinity.

Aquin.: SMT XP Q[55] A[4] Obj. 2 Para. 1/1

OBJ 2: Further if the hymen be penetrated without the deed being
consummated, affinity is not contracted. Yet this is much more akin to
carnal intercourse than a betrothal. Therefore betrothal does not cause
affinity.

Aquin.: SMT XP Q[55] A[4] Obj. 3 Para. 1/1

OBJ 3: Further, betrothal is nothing but a promise of future marriage.
Now sometimes there is a promise of future marriage without affinity
being contracted, for instance if it take place before the age of seven
years; or if a man having a perpetual impediment of impotence promise a
woman future marriage; or if a like promise be made between persons to
whom marriage is rendered unlawful by a vow; or in any other way
whatever. Therefore betrothal cannot cause affinity.

Aquin.: SMT XP Q[55] A[4] OTC Para. 1/1

On the contrary, Pope Alexander (cap. Ad audiendem, De spons. et
matrim.) forbade a certain woman to marry a certain man, because she had
been betrothed to his brother. Now this would not be the case unless
affinity were contracted by betrothal. Therefore, etc.

Aquin.: SMT XP Q[55] A[4] Body Para. 1/1

I answer that, Just as a betrothal has not the conditions of a perfect
marriage, but is a preparation for marriage, so betrothal causes not
affinity as marriage does, but something like affinity. This is called
"the justice of public honesty," which is an impediment to marriage even
as affinity and consanguinity are, and according to the same degrees, and
is defined thus: "The justice of public honesty is a relationship arising
out of betrothal, and derives its force from ecclesiastical institution
by reason of its honesty." This indicates the reason of its name as well
as its cause, namely that this relationship was instituted by the Church
on account of its honesty.

Aquin.: SMT XP Q[55] A[4] R.O. 1 Para. 1/1

Reply OBJ 1: Betrothal, by reason not of itself but of the end to which
it is directed, causes this kind of affinity known as "the justice of
public honesty": wherefore just as marriage is a lasting tie, so is the
aforesaid kind of affinity.

Aquin.: SMT XP Q[55] A[4] R.O. 2 Para. 1/1

Reply OBJ 2: In carnal intercourse man and woman become one flesh by the
mingling of seeds. Wherefore it is not every invasion or penetration of
the hymen that causes affinity to be contracted, but only such as is
followed by a mingling of seeds. But marriage causes affinity not only on
account of carnal intercourse, but also by reason of the conjugal
fellowship, in respect of which also marriage is according to nature.
Consequently affinity results from the marriage contract itself expressed
in words of the present and before its consummation, and in like manner
there results from betrothal, which is a promise of conjugal fellowship,
something akin to affinity, namely the justice of public honesty.

Aquin.: SMT XP Q[55] A[4] R.O. 3 Para. 1/1

Reply OBJ 3: All those impediments which void a betrothal prevent
affinity being contracted through a promise of marriage. Hence whether he
who actually promises marriage be lacking in age, or be under a solemn
vow of continence or any like impediment, no affinity nor anything akin
to it results because the betrothal is void. If however, a minor,
laboring under insensibility or malefice, having a perpetual impediment,
is betrothed before the age of puberty and after the age of seven years,
with a woman who is of age, from such a contract there results the
impediment called "justice of public honesty," because at the time the
impediment was not actual, since at that age the boy who is insensible is
equally impotent in respect of the act in question.


Aquin.: SMT XP Q[55] A[5] Thes. Para. 1/1

Whether affinity is a cause of affinity?

Aquin.: SMT XP Q[55] A[5] Obj. 1 Para. 1/1

OBJ 1: It would seem that affinity also is a cause of affinity. For Pope
Julius I says (cap. Contradicimus 35, qu. iii): "No man may marry his
wife's surviving blood-relation": and it is said in the next chapter
(cap. Porro duorum) that "the wives of two cousins are forbidden to
marry, one after the other, the same husband." But this is only on
account of affinity being contracted through union with a person related
by affinity. Therefore affinity is a cause of affinity.

Aquin.: SMT XP Q[55] A[5] Obj. 2 Para. 1/1

OBJ 2: Further, carnal intercourse makes persons akin even as carnal
procreation, since the degrees of affinity and consanguinity are reckoned
equally. But consanguinity causes affinity. Therefore affinity does also.

Aquin.: SMT XP Q[55] A[5] Obj. 3 Para. 1/1

OBJ 3: Further, things that are the same with one and the same are the
same with one another. But the wife contracts the same relations with all
her husband's kindred. Therefore all her husband's kindred are made one
with all who are related by affinity to the wife, and thus affinity is
the cause of affinity.

Aquin.: SMT XP Q[55] A[5] Obj. 4 Para. 1/1

OBJ 4: On the contrary, If affinity is caused by affinity a man who has
connection with two women can marry neither of them, because then the one
would be related to the other by affinity. But this is false. Therefore
affinity does not cause affinity.

Aquin.: SMT XP Q[55] A[5] Obj. 5 Para. 1/1

OBJ 5: Further, if affinity arose out of affinity a man by marrying
another man's widow would contract affinity with all her first husband's
kindred, since she is related to them by affinity. But this cannot be the
case because he would become especially related by affinity to her
deceased husband. Therefore, etc.

Aquin.: SMT XP Q[55] A[5] Obj. 6 Para. 1/1

OBJ 6: Further, consanguinity is a stronger tie than affinity. But the
blood-relations of the wife do not become blood-relations of the husband.
Much less, therefore, does affinity to the wife cause affinity to her
blood-relations, and thus the same conclusion follows.

Aquin.: SMT XP Q[55] A[5] Body Para. 1/1

I answer that, There are two ways in which one thing proceeds from
another: in one way a thing proceeds from another in likeness of species,
as a man is begotten of a man: in another way one thing proceeds from
another, not in likeness of species; and this process is always towards a
lower species, as instanced in all equivocal agents. The first kind of
procession, however often it be repeated, the same species always
remains: thus if one man be begotten of another by an act of the
generative power, of this man also another man will be begotten, and so
on. But the second kind of procession, just as in the first instance it
produces another species, so it makes another species as often as it is
repeated. Thus by movement from a point there proceeds a line and not a
point, because a point by being moved makes a line; and from a line
moved lineally, there proceeds not a line but a surface, and from a
surface a body, and in this way the procession can go no further. Now in
the procession of kinship we find two kinds whereby this tie is caused:
one is by carnal procreation, and this always produces the same species
of relationship; the other is by the marriage union, and this produces a
different kind of relationship from the beginning: thus it is clear that
a married woman is related to her husband's blood-relations not by blood
but by affinity. Wherefore if this kind of process be repeated, the
result will be not affinity but another kind of relationship; and
consequently a married party contracts with the affines of the other
party a relation not of affinity but of some other kind which is called
affinity of the second kind. And again if a person through marriage
contracts relationship with an affine of the second kind, it will not be
affinity of the second kind, but of a third kind, as indicated in the
verse quoted above (A[1]). Formerly these two kinds were included in the
prohibition, under the head of the justice of public honesty rather than
under the head of affinity, because they fall short of true affinity, in
the same way as the relationship arising out of betrothal. Now however
they have ceased to be included in the prohibition, which now refers only
to the first kind of affinity in which true affinity consists.

Aquin.: SMT XP Q[55] A[5] R.O. 1 Para. 1/1

Reply OBJ 1: A husband contracts affinity of the first kind with his
wife's male blood-relation, and affinity of the second kind with the
latter's wife: wherefore if the latter man dies the former cannot marry
his widow on account of the second kind of affinity. Again if a man A
marry a widow B, C, a relation of her former husband being connected with
B by the first kind of affinity, contracts affinity of the second kind
with her husband A; and D, the wife of this relation C being connected,
by affinity of the second kind, with B, this man's wife contracts
affinity of the third kind with her husband A. And since the third kind
of affinity was included in the prohibition on account of a certain
honesty more than by reason of affinity, the canon (cap. Porro duorum 35,
qu. iii) says: "The justice of public honesty forbids the wives of two
cousins to be married to the same man, the one after the other." But this
prohibition is done away with.

Aquin.: SMT XP Q[55] A[5] R.O. 2 Para. 1/1

Reply OBJ 2: Although carnal intercourse is a cause of people being
connected with one another, it is not the same kind of connection.

Aquin.: SMT XP Q[55] A[5] R.O. 3 Para. 1/2

Reply OBJ 3: The wife contracts the same connection with her husband's
relatives as to the degree but not as to the kind of connection.

Aquin.: SMT XP Q[55] A[5] R.O. 3 Para. 2/2

Since however the arguments in the contrary sense would seem to show
that no tie is caused by affinity, we must reply to them lest the
time-honored prohibition of the Church seem unreasonable.

Aquin.: SMT XP Q[55] A[5] R.O. 4 Para. 1/1

Reply OBJ 4: As stated above, a woman does not contract affinity of the
first kind with the man to whom she is united in the flesh, wherefore
she does not contract affinity of the second kind with a woman known by
the same man; and consequently if a man marry one of these women, the
other does not contract affinity of the third kind with him. And so the
laws of bygone times did not forbid the same man to marry successively
two women known by one man.

Aquin.: SMT XP Q[55] A[5] R.O. 5 Para. 1/1

Reply OBJ 5: As a man is not connected with his wife by affinity of the
first kind, so he does not contract affinity of the second kind with the
second husband of the same wife. Wherefore the argument does not prove.

Aquin.: SMT XP Q[55] A[5] R.O. 6 Para. 1/1

Reply OBJ 6: One person is not connected with me through another, except
they be connected together. Hence through a woman who is affine to me, no
person becomes connected with me, except such as is connected with her.
Now this cannot be except through carnal procreation from her, or through
connection with her by marriage: and according to the olden legislation,
I contracted some kind of connection through her in both ways: because
her son even by another husband becomes affine to me in the same kind and
in a different degree of affinity, as appears from the rule given above:
and again her second husband becomes affine to me in the second kind of
affinity. But her other blood-relations are not connected with him, but
she is connected with them, either as with father or mother, inasmuch as
she descends from them, or, as with her brothers, as proceeding from the
same principle; wherefore the brother or father of my affine does not
become affine to me in any kind of affinity.


Aquin.: SMT XP Q[55] A[6] Thes. Para. 1/1

Whether affinity is an impediment to marriage?

Aquin.: SMT XP Q[55] A[6] Obj. 1 Para. 1/1

OBJ 1: It would seem that affinity is not an impediment to marriage. For
nothing is an impediment to marriage except what is contrary thereto. But
affinity is not contrary to marriage since it is caused by it. Therefore
it is not an impediment to marriage.

Aquin.: SMT XP Q[55] A[6] Obj. 2 Para. 1/1

OBJ 2: Further, by marriage the wife becomes a possession of the
husband. Now the husband's kindred inherit his possessions after his
death. Therefore they can succeed to his wife, although she is affine to
them, as shown above (A[5]). Therefore affinity is not an impediment to
marriage.

Aquin.: SMT XP Q[55] A[6] OTC Para. 1/1

On the contrary, It is written (Lev. 18:8): "Thou shalt not uncover the
nakedness of thy father's wife." Now she is only affine. Therefore
affinity is an impediment to marriage.

Aquin.: SMT XP Q[55] A[6] Body Para. 1/1

I answer that, Affinity that precedes marriage hinders marriage being
contracted and voids the contract, for the same reason as consanguinity.
For just as there is a certain need for blood-relations to live together,
so is there for those who are connected by affinity: and just as there is
a tie of friendship between blood-relations, so is there between those
who are affine to one another. If, however, affinity supervene to
matrimony, it cannot void the marriage, as stated above (Q[50], A[7]).

Aquin.: SMT XP Q[55] A[6] R.O. 1 Para. 1/1

Reply OBJ 1: Affinity is not contrary to the marriage which causes it,
but to a marriage being contracted with an affine, in so far as the
latter would hinder the extension of friendship and the curbing of
concupiscence, which are sought in marriage.

Aquin.: SMT XP Q[55] A[6] R.O. 2 Para. 1/1

Reply OBJ 2: The husband's possessions do not become one with him as the
wife is made one flesh with him. Wherefore just as consanguinity is an
impediment to marriage or union with the husband according to the flesh,
so is one forbidden to marry the husband's wife.


Aquin.: SMT XP Q[55] A[7] Thes. Para. 1/1

Whether affinity in itself admits of degrees?

Aquin.: SMT XP Q[55] A[7] Obj. 1 Para. 1/1

OBJ 1: It would seem that affinity in itself admits of degrees. For any
kind of propinquity can itself be the subject of degrees. Now affinity is
a kind of propinquity. Therefore it has degrees in itself apart from the
degrees of consanguinity by which it is caused.

Aquin.: SMT XP Q[55] A[7] Obj. 2 Para. 1/1

OBJ 2: Further, it is stated in the text (Sent. iv, D, 41) that the
child of a second marriage could not take a consort from within the
degrees of affinity of the first husband. But this would not be the case
unless the son of an affine were also affine. Therefore affinity like
consanguinity admits itself of degrees.

Aquin.: SMT XP Q[55] A[7] OTC Para. 1/1

On the contrary, Affinity is caused by consanguinity. Therefore all the
degrees of affinity are caused by the degrees of consanguinity: and so it
has no degrees of itself.

Aquin.: SMT XP Q[55] A[7] Body Para. 1/1

I answer that, A thing does not of itself admit of being divided except
in reference to something belonging to it by reason of its genus: thus
animal is divided into rational and irrational and not into white and
black. Now carnal procreation has a direct relation to consanguinity,
because the tie of consanguinity is immediately contracted through it;
whereas it has no relation to affinity except through consanguinity which
is the latter's cause. Wherefore since the degrees of relationship are
distinguished in reference to carnal procreation, the distinction of
degrees is directly and immediately referable to consanguinity, and to
affinity through consanguinity. Hence the general rule in seeking the
degrees of affinity is that in whatever degree of consanguinity I am
related to the husband, in that same degree of affinity I am related to
the wife.

Aquin.: SMT XP Q[55] A[7] R.O. 1 Para. 1/1

Reply OBJ 1: The degrees in propinquity of relationship can only be
taken in reference to ascent and descent of propagation, to which
affinity is compared only through consanguinity. Wherefore affinity has
no direct degrees, but derives them according to the degrees of
consanguinity.

Aquin.: SMT XP Q[55] A[7] R.O. 2 Para. 1/1

Reply OBJ 2: Formerly it used to be said that the son of my affine by a
second marriage was affine to me, not directly but accidentally as it
were: wherefore he was forbidden to marry on account of the justice of
public honesty rather than affinity. And for this reason this prohibition
is now revoked.


Aquin.: SMT XP Q[55] A[8] Thes. Para. 1/1

Whether the degrees of affinity extend in the same way as the degrees of
consanguinity?

Aquin.: SMT XP Q[55] A[8] Obj. 1 Para. 1/1

OBJ 1: It would seem that the degrees of affinity do not extend in the
same way as the degrees of consanguinity. For the tie of affinity is less
strong than the tie of consanguinity, since affinity arises from
consanguinity in diversity of species, as from an equivocal cause. Now
the stronger the tie the longer it lasts. Therefore the tie of affinity
does not last to the same number of degrees as consanguinity.

Aquin.: SMT XP Q[55] A[8] Obj. 2 Para. 1/1

OBJ 2: Further, human law should imitate Divine law. Now according to
the Divine law certain degrees of consanguinity were forbidden, in which
degrees affinity was not an impediment to marriage: as instanced in a
brother's wife whom a man could marry although he could not marry her
sister. Therefore now too the prohibition of affinity and consanguinity
should not extend to the same degrees.

Aquin.: SMT XP Q[55] A[8] OTC Para. 1/1

On the contrary, A woman is connected with me by affinity from the very
fact that she is married to a blood-relation of mine. Therefore in
whatever degree her husband is related to me by blood she is related to
me in that same degree by affinity: and so the degrees of affinity should
be reckoned in the same number as the degrees of consanguinity.

Aquin.: SMT XP Q[55] A[8] Body Para. 1/1

I answer that, Since the degrees of affinity are reckoned according to
the degrees of consanguinity, the degrees of affinity must needs be the
same in number as those of consanguinity. Nevertheless, affinity being a
lesser tie than consanguinity, both formerly and now, a dispensation is
more easily granted in the more remote degrees of affinity than in the
remote degrees of consanguinity.

Aquin.: SMT XP Q[55] A[8] R.O. 1 Para. 1/1

Reply OBJ 1: The fact that the tie of affinity is less than the tie of
consanguinity causes a difference in the kind of relationship but not in
the degrees. Hence this argument is not to the point.

Aquin.: SMT XP Q[55] A[8] R.O. 2 Para. 1/1

Reply OBJ 2: A man could not take his deceased brother's wife except, in
the case when the latter died without issue, in order to raise up seed to
his brother. This was requisite at a time when religious worship was
propagated by means of the propagation of the flesh, which is not the
case now. Hence it is clear that he did not marry her in his own person
as it were, but as supplying the place of his brother.


Aquin.: SMT XP Q[55] A[9] Thes. Para. 1/1

Whether a marriage contracted by persons with the degrees of affinity or
consanguinity should always be annulled?

Aquin.: SMT XP Q[55] A[9] Obj. 1 Para. 1/1

OBJ 1: It would seem that a marriage contracted by persons within the
degrees of affinity or consanguinity ought not always to be annulled by
divorce. For "what God hath joined together let no man put asunder" (Mt.
19:6). Since then it is understood that what the Church does God does,
and since the Church sometimes through ignorance joins such persons
together, it would seem that if subsequently this came to knowledge they
ought not to be separated.

Aquin.: SMT XP Q[55] A[9] Obj. 2 Para. 1/1

OBJ 2: Further, the tie of marriage is less onerous than the tie of
ownership. Now after a long time a man may acquire by prescription the
ownership of a thing of which he was not the owner. Therefore by length
of time a marriage becomes good in law, although it was not so before.

Aquin.: SMT XP Q[55] A[9] Obj. 3 Para. 1/1

OBJ 3: Further, of like things we judge alike. Now if a marriage ought
to be annulled on account of consanguinity, in the case when two brothers
marry two sisters, if one be separated on account of consanguinity, the
other ought to be separated for the same reason. and yet this is not
seemly. Therefore a marriage ought not to be annulled on account of
affinity or consanguinity.

Aquin.: SMT XP Q[55] A[9] OTC Para. 1/1

On the contrary, Consanguinity and affinity forbid the contracting of a
marriage and void the contract. Therefore if affinity or consanguinity be
proved, the parties should be separated even though they have actually
contracted marriage.

Aquin.: SMT XP Q[55] A[9] Body Para. 1/1

I answer that, Since all copulation apart from lawful marriage is a
mortal sin, which the Church uses all her endeavors to prevent, it
belongs to her to separate those between whom there cannot be valid
marriage, especially those related by blood or by affinity, who cannot
without incest be united in the flesh.

Aquin.: SMT XP Q[55] A[9] R.O. 1 Para. 1/1

Reply OBJ 1: Although the Church is upheld by God's gift and authority,
yet in so far as she is an assembly of men there results in her acts
something of human frailty which is not Divine. Therefore a union
effected in the presence of the Church who is ignorant of an impediment
is not indissoluble by Divine authority, but is brought about contrary to
Divine authority through man's error, which being an error of fact
excuses from sin, as long as it remains. Hence when the impediment comes
to the knowledge of the Church, she ought to sever the aforesaid union.

Aquin.: SMT XP Q[55] A[9] R.O. 2 Para. 1/1

Reply OBJ 2: That which cannot be done without sin is not ratified by
any prescription, for as Innocent III says (Conc. Later. iv, can. 50:
cap. Non debent, De consang. et affinit.), "length of time does not
diminish sin but increases it": nor can it in any way legitimize a
marriage which could not take place between unlawful persons.

Aquin.: SMT XP Q[55] A[9] R.O. 3 Para. 1/1

Reply OBJ 3: In contentious suits between two persons the verdict does
not prejudice a third party, wherefore although the one brother's
marriage with the one sister is annulled on account of consanguinity, the
Church does not therefore annul the other marriage against which no
action is taken. Yet in the tribunal of the conscience the other brother
ought not on this account always to be bound to put away his wife,
because such accusations frequently proceed from ill-will, and are proved
by false witnesses. Hence he is not bound to form his conscience on what
has been done about the other marriage: but seemingly one ought to draw a
distinction, because either he has certain knowledge of the impediment of
his marriage, or he has an opinion about it, or he has neither. In the
first case, he can neither seek nor pay the debt, in the second, he must
pay, but not ask, in the third he can both pay and ask.


Aquin.: SMT XP Q[55] A[10] Thes. Para. 1/1

Whether it is necessary to proceed by way of accusation for the annulment
of a marriage contracted by persons related to each other by affinity or
consanguinity?

Aquin.: SMT XP Q[55] A[10] Obj. 1 Para. 1/1

OBJ 1: It would seem that one ought not to proceed by way of accusation
in order to sever a marriage contracted between persons related by
affinity or consanguinity. Because accusation is preceded by inscription*
whereby a man binds himself to suffer the punishment of retaliation, if
he fail to prove his accusation. [*The accuser was bound by Roman Law to
endorse (se inscribere) the writ of accusation; Cf. SS, Q[33], A[7]]. But
this is not required when a matrimonial separation is at issue. Therefore
accusation has no place then.

Aquin.: SMT XP Q[55] A[10] Obj. 2 Para. 1/1

OBJ 2: Further, in a matrimonial lawsuit only the relatives are heard,
as stated in the text (Sent. iv, D, 41). But in accusations even
strangers are heard. Therefore in a suit for matrimonial separation the
process is not by way of accusation.

Aquin.: SMT XP Q[55] A[10] Obj. 3 Para. 1/1

OBJ 3: Further, if a marriage ought to be denounced this should be done
especially where it is least difficult to sever the tie. Now this is when
only the betrothal has been contracted, and then it is not the marriage
that is denounced. Therefore accusation should never take place at any
other time.

Aquin.: SMT XP Q[55] A[10] Obj. 4 Para. 1/1

OBJ 4: Further, a man is not prevented from accusing by the fact that he
does not accuse at once. But this happens in marriage, for if he was
silent at first when the marriage was being contracted, he cannot
denounce the marriage afterwards without laying himself open to
suspicion. Therefore, etc.

Aquin.: SMT XP Q[55] A[10] OTC Para. 1/1

On the contrary, Whatever is unlawful can be denounced. But the marriage
of relatives by affinity and consanguinity is unlawful. Therefore it can
be denounced.

Aquin.: SMT XP Q[55] A[10] Body Para. 1/1

I answer that, Accusation is instituted lest the guilty be tolerated as
though they were innocent. Now just as it happens through ignorance of
fact that a guilty man is reputed innocent, so it happens through
ignorance of a circumstance that a certain fact is deemed lawful whereas
it is unlawful. Wherefore just as a man is sometimes accused, so is a
fact sometimes an object of accusation. It is in this way that a marriage
is denounced, when through ignorance of an impediment it is deemed
lawful, whereas it is unlawful.

Aquin.: SMT XP Q[55] A[10] R.O. 1 Para. 1/1

Reply OBJ 1: The punishment of retaliation takes place when a person is
accused of a crime, because then action is taken that he may be punished.
But when it is a deed that is accused, action is taken not for the
punishment of the doer, but in order to prevent what is unlawful. Hence
in a matrimonial suit the accuser does not bind himself to a punishment.
Moreover, the accusation may be made either in words or in writing,
provided the person who denounces the marriage denounced, and the
impediment for which it is denounced, be expressed.

Aquin.: SMT XP Q[55] A[10] R.O. 2 Para. 1/1

Reply OBJ 2: Strangers cannot know of the consanguinity except from the
relatives, since these know with greater probability. Hence when these
are silent, a stranger is liable to be suspected of acting from ill-will
unless he wish the relatives to prove his assertion. Wherefore a stranger
is debarred from accusing when there are relatives who are silent, and by
whom he cannot prove his accusation. On the other hand the relatives,
however nearly related they be, are not debarred from accusing, when the
marriage is denounced on account of a perpetual impediment, which
prevents the contracting of the marriage and voids the contract. When,
however, the accusation is based on a denial of the contract having taken
place, the parents should be debarred from witnessing as being liable to
suspicion, except those of the party that is inferior in rank and wealth,
for they, one is inclined to think, would be willing for the marriage to
stand.

Aquin.: SMT XP Q[55] A[10] R.O. 3 Para. 1/1

Reply OBJ 3: If the marriage is not yet contracted and there is only a
betrothal, there can be no accusation, for what is not, cannot be
accused. But the impediment can be denounced lest the marriage be
contracted.

Aquin.: SMT XP Q[55] A[10] R.O. 4 Para. 1/1

Reply OBJ 4: He who is silent at first is sometimes heard afterwards if
he wish to denounce the marriage, and sometimes he is repulsed. This is
made clear by the Decretal (cap. Cum in tua, De his qui matrim. accus.
possunt.) which runs as follows: "If an accuser present himself after the
marriage has been contracted, since he did not declare himself when
according to custom, the banns were published in church, we may rightly
ask whether he should be allowed to voice his accusation. In this matter
we deem that a distinction should be made, so that if he who lodges
information against persons already married was absent from the diocese
at the time of the aforesaid publication, or if for some other reason
this could not come to his knowledge, for instance if through exceeding
stress of weakness and fever he was not in possession of his faculties,
or was of so tender years as to be too young to understand such matters,
or if he were hindered by some other lawful cause, his accusation should
be heard. otherwise without doubt he should be repulsed as open to
suspicion, unless he swear that the information lodged by him came to
his knowledge subsequently and that he is not moved by ill-will to make
his accusation."


Aquin.: SMT XP Q[55] A[11] Thes. Para. 1/1

Whether in a suit of this kind one should proceed by hearing witnesses in
the same way as in other suits?

Aquin.: SMT XP Q[55] A[11] Obj. 1 Para. 1/1

OBJ 1: It would seem that in such a suit one ought not to proceed by
hearing witnesses, in the same way as in other suits where any witnesses
may be called provided they be unexceptionable. But here strangers are
not admitted, although they be unexceptionable. Therefore, etc.

Aquin.: SMT XP Q[55] A[11] Obj. 2 Para. 1/1

OBJ 2: Further, witnesses who are suspected of private hatred or love
are debarred from giving evidence. Now relatives are especially open to
suspicion of love for one party, and hatred for the other. Therefore
their evidence should not be taken.

Aquin.: SMT XP Q[55] A[11] Obj. 3 Para. 1/1

OBJ 3: Further, marriage is a more favorable suit than those others in
which purely corporeal questions are at stake. Now in these the same
person cannot be both accuser and witness. Neither therefore can this be
in a matrimonial suit; and so it would appear that it is not right to
proceed by hearing witnesses in a suit of this kind.

Aquin.: SMT XP Q[55] A[11] OTC Para. 1/1

On the contrary, Witnesses are called in a suit in order to give the
judge evidence concerning matters of doubt. Now evidence should be
afforded the judge in this suit as in other suits, since he must not
pronounce a hasty judgment on what is not proven. Therefore here as in
other lawsuits witnesses should be called.

Aquin.: SMT XP Q[55] A[11] Body Para. 1/2

I answer that, In this kind of lawsuit as in others, truth must be
unveiled by witnesses: yet, as the lawyers say, there are many things
peculiar to this suit; namely that "the same person can be accuser and
witness; that evidence is not taken 'on oath of calumny,' since it is a
quasi-spiritual lawsuit; that relatives are allowed as witnesses; that
the juridical order is not perfectly observed, since if the denunciation
has been made, and the suit is uncontested, the defendant may be
excommunicated if contumacious; that hearsay evidence is admitted; and
that witnesses may be called after the publication of the names of the
witnesses." All this is in order to prevent the sin that may occur in
such a union (cap. Quoties aliqui; cap. Super eo, De test. et attest.;
cap. Literas, De juram. calumn.).

Aquin.: SMT XP Q[55] A[11] Body Para. 2/2

This suffices for the Replies to the Objections.





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