A TREATISE AGAINST
EUTYCHES AND NESTORIUS
By
ANICIUS MANLIUS SEVERINUS
BOETHIUS
MOST HONOURABLE, OF THE ILLUSTRIOUS ORDER OF
EX-CONSULS, PATRICIAN
TO HIS SAINTLY MASTER AND REVEREND FATHER
JOHN THE DEACON HIS SON BOETHIUS
I HAVE been long and anxiously waiting for you to discuss with me the problem which was raised at the meeting. But since your duties have prevented your coming and I shall be for some time involved in my business engagements, I am setting down in writing what I had been keeping to say by word of mouth.
YOU no doubt
remember how, when the letter1
was read in the assembly, it was asserted that the Eutychians confess that
Christ is formed from two natures but does not consist of them - whereas
Catholics admit both propositions, for among followers of the true Faith He is
equally believed to be of two natures and in two natures. Struck by the novelty
of
I was sitting
a long way from the man whom I especially wished to watch,2
and if you recall the arrangement of the seats, I was turned away from him,
with so many between us, that however much I desired it I could not see his
face and expression and glean therefrom any sign of his opinion. Personally,
indeed, I had nothing more to contribute than the rest, in fact rather less
than more. I, no more than the others, had any view about the question at
issue, while my possible contribution was less by one thing, namely, the false
assumption of a knowledge that I had not got. I was, I admit, much put out, and
being overwhelmed by the mob of ignorant speakers, I held my peace, fearing
lest I should be rightly set down as insane if I held out for being sane among
those madmen.3 So I
continued to ponder all the questions in my mind, not swallowing what I had
heard, but rather chewing the cud of constant meditation. At last the door
opened to my insistent, knocking, and the truth which I found cleared out of my
way all the clouds of the Eutychian error. And with this discovery a great
wonder came upon me at the vast temerity of unlearned men who use the cloak of
impudent presumption to cover up the
I turn from them to you, and to you I submit this little essay for your first judgment and consideration. If you pronounce it to be sound I beg you to place it among the other writings of mine which you possess; but if there is anything to be struck out or added or changed in any way, I would ask you to let me have your suggestions, in order that I may enter them in my copies just as they leave your hands. When this revision has been duly accomplished, then I will send the work on to be judged by the man to whom I always submit everything.5 But since the pen is now to take the place of the living voice, let me first clear away the extreme and self-contradictory errors of Nestorius and Eutyches; after that, by God's help, I will temperately set forth the middle way of the Christian Faith. But since in this whole question of self-contradictory heresies the matter of debate is Persons and Natures, these terms most first be defined and distinguished by their proper differences.
I.
Nature, then,
may be affirmed either of bodies alone or of substances alone, that is, of
corporeals or incorporeals, or of everything that is in any way capable of
affirmation. Since, then, nature can be affirmed in three ways, it must
obviously be defined in three ways. For if you choose to affirm nature of the totality
of things, the definition will be of such
But if "nature" is affirmed of substances alone, we shall, since all substances are either corporeal or incorporeal, give to nature denoting substances a definition of the following kind: "Nature is either that which can act or that which can be acted upon." Now the power to act and to suffer belongs to all corporeals and the soul of corporeals; for it both acts in the body and suffers by the body. But only to act belongs to God and other divine substances.
Here, then, you have a further
definition of what nature is as applied to substances alone. This definition
comprises also the definition of substance. For if the word nature signifies
substance, when once we have defined nature we have also settled the definition
of substance. But if we neglect incorporeal substances and confine the name
nature to corporeal substances so that they alone appear to possess the nature
of substance - which is the view of Aristotle
Nature has, further, another meaning according to which we speak of the different nature of gold and silver, wishing thereby to point the special property of things; this meaning of nature will be defined as follows: "Nature is the specific difference that gives form to anything." Thus, although nature is described or defined in all these different ways, both Catholics and Nestorians firmly hold that there are in Christ two natures of the kind laid down in our last definition, for the same specific differences cannot apply to God and man.
II.
But the proper
definition of Person is a matter of very great perplexity. For if every nature
has
We must, therefore, conduct our inquiry into these points as follows.
Since Person cannot exist apart from nature and since natures are either substances or accidents and we see that a person cannot come into being among accidents (for who can say there is any person of white or black or size?), it therefore remains that Person is properly applied to substances. But of substances, some are corporeal and others incorporeal. And of corporeals, some are living and others the reverse; of living substances, some are sensitive and others insensitive; of sensitive substances, some are rational and others irrational.6 Similarly of incorporeal substances, some are rational, others the reverse (for instance the animating spirits of beasts); but of rational substances there is one which is immutable and impassible by nature, namely God, another which in virtue of its creation is mutable and passible except in that case where the Grace of the impassible substance has transformed it to the unshaken impassibility which belongs to angels and to the soul.
Now from all
the definitions we have given it is clear that Person cannot be affirmed of
bodies which have no life (for no one ever said that a stone had a person), nor
yet of living things which lack sense (for
III.
Wherefore if Person belongs to substances alone, and
these rational, and if every nature is a substance, existing not in universals
but in individuals, we have found the definition of Person, viz.: "The
individual substance of a rational creature."7
Now by this definition we Latins have described what the Greeks call
For our equivalents
of the Greek terms
To begin with,
then, man is essence, i.e.
IV.
You must
consider that all I have said so far has been for the purpose of marking the
difference
What kind of
union, then, between God and man has been effected? Is it as when two bodies
are laid the one against the other, so that they are only joined locally, and
no touch of the quality of the one reaches the other - the kind of union which
the Greeks term
But although there are many weapons strong enough to wound and demolish the Nestorian view, let us for the moment be content with this small selection from the store of arguments available.
V.
I must now
pass to Eutyches who, wandering from the path of primitive doctrine, has rushed
into the opposite error14
and asserts that so far from our having to believe in a twofold Person in
Christ, we must not even confess a double Nature; humanity, he maintains, was
so assumed that the union with Godhead involved the disappearance of the human
nature. His error springs from the same source as that of Nestorius. For just
as Nestorius deems there could not be a double Nature unless the Person were
doubled, and therefore, confessing the double Nature in Christ, has perforce
believed the Person to be double, so also Eutyches denied that the Nature was
not double unless the Person was double and since he did not confess a double
Person, he thought it a necessary consequence that the Nature should be
regarded as single. Thus Nestorius, rightly holding Christ's Nature to be
double, sacrilegiously professes the Persons to be two; whereas Eutyches,
rightly believing the Person to be single, impiously believes that the Nature
also is single. And being confuted by the plain evidence of facts, since it is
clear that the Nature of God is different from that of man, he declares his
belief to be: two Natures in Christ before the union and only one after the
union. Now this statement does not express clearly what he means. However, let
us scrutinize his extravagance. It is plain that this union took place either
at the moment of conception or at the moment of resurrection. But if it
happened at the moment of conception Eutyches seems to think that even before
conception He had human flesh, not taken from Mary but
VI.
I think enough
has been said on the supposition that we should believe that the body which
Christ received was not taken from Mary. But if it was taken from Mary and the
human and divine natures did not continue, each in its perfection, this may
have happened in one of three ways. Either Godhead was translated into manhood,
or manhood into Godhead, or both were so modified and mingled that neither
substance kept its proper form. But if Godhead was translated into manhood,
that has happened which piety forbids us to believe, viz. while the manhood
continued in unchangeable substance Godhead was changed, and that which was by
nature passible and mutable remained immutable, while that which we believe to
be by nature immutable and impassible
It is
therefore impossible for a body to be changed into an incorporeal species, nor
will it ever be possible for incorporeals to be changed into each other by any
process of mingling. For things which have no common matter cannot be changed
and converted one into another. But incorporeal things have no matter; they can
never, therefore, be changed about among themselves. But the soul and God are
rightly believed to be incorporeal substances; therefore the human soul has not
been converted into the Godhead
But the Eutychians say that Christ consists indeed of two natures, but not in two natures, meaning, no doubt, thereby, that a thing which consists of two elements can so far become one, that the elements of which it is said to be made up disappear; just as, for example, when honey is mixed with water neither remains, but the one thing being spoilt by conjunction with the other produces a certain third thing, so that third thing which is produced by the combination of honey and water is said to consist of both, but not in both. For it can never consist in both so long as the nature of both does not continue. For it can consist of both even though each element of which it is compounded has been spoiled by the quality of the other; but it can never consist in both natures of this kind since the elements which have been transmuted into each other do not continue, and both the elements in which it seems to consist cease to be, since it consists of two things translated into each other by change of qualities.
But Catholics
in accordance with reason confess both, for they say that Christ consists both
of and in two natures. How this can be affirmed I will explain a little later.
One thing is now clear; the opinion of Eutyches has been confuted on the ground
that,
VII.
It remains for us to show how in accordance with the affirmation of Catholic belief Christ consists at once in and of both natures.
The statement that a thing consists of two natures bears two meanings; one, when we say that anything is a union of two natures, as e.g. honey and water, where the union is such that in the combination however the elements be confounded, whether by one nature changing into the other, or by both mingling with each other, the two entirely disappear. This is the way in which according to Eutyches Christ consists of two natures.
The other way in which a thing can consist of two natures is when it is so combined of two that the elements of which it is said to be combined continue without changing into each other, as when we say that a crown is composed of gold and gems. Here neither is the gold converted into gems nor is the gem turned into gold, but both continue without surrendering their proper form.
Things then
like this, composed of various elements, we say consist also in the elements of
which they are composed. For in this case we can say that a crown is composed
of gems and gold, for gems and gold are that in which the crown consists. For
in the former
Since then the Catholic Faith confesses that both natures continue in Christ and that they both remain perfect, neither being transformed into the other, it says with right that Christ consists both in and of the two natures; in the two because both continue, of the two because the One Person of Christ is formed by the union of the two continuing natures.
But the Catholic Faith does not hold the union of Christ out of two natures according to that sense which Eutyches puts upon it. For the interpretation of the conjunction out of two natures which he adopts forbids him to confess consistence in two or the continuance of the two either; but the Catholic adopts an interpretation of the consistence out of two which comes near to that of Eutyches, yet keeps the interpretation which confesses consistence in two.
"To consist of two natures" is therefore an equivocal or rather a doubtful term of double meaning denoting different things; according to one of its interpretations the substances out of which the union is said to have been composed do not continue, according to another the union effected of the two is such that both natures continue.
When once this
knot of doubt or ambiguity has been untied, nothing further can be advanced to
shake the true and solid content of the Catholic Faith, which is that the same
Christ is perfect man and God, and that He who is perfect man and God is One God
and Son of Man, that, however, quaternity is not added to the Trinity by the
addition of human nature to perfect Godhead, but that one and the same Person
completes the number of the Trinity,
Wherefore if
the following four assertions can be said to be neither beyond or below reason,
viz. that in Christ are either two Natures and two Persons as Nestorius says,
or one Person and one Nature as Eutyches says, or two Natures but one Person as
VII.
Nevertheless
there remains yet another question which can be advanced by those who do not
believe that the human body was taken from Mary, but that the body was in some
other way set apart and prepared, which in the moment of union appeared to be
conceived and born of Mary's womb. For they say: if the body was taken from man
while every man was, from the time of the first disobedience, not only enslaved
by sin and death but also involved
In truth, the manhood which He assumed He likewise saved; but if He assumed such manhood as Adam had before sin, He appears to have assumed a human nature complete indeed, but one which was in no need of healing. But how can it be that He assumed such manhood as Adam had when there could be in Adam both the will and the desire to sin, whence it came to pass that even after the divine commands had been broken, he was still held captive to sins of disobedience? But we believe that in Christ there was never any will to sin, because especially if He assumed such a human body as Adam had before his sin, He could not be mortal, since Adam, had he not sinned, would in no wise have suffered death. Since, then, Christ never sinned, it must be asked why, He suffered death if He assumed the body of Adam before sin. But if He accepted human conditions such as Adam's were after sin, it seems that Christ could not avoid being subject to sin, perplexed by passions, and, since the canons of judgment were obscured, prevented from distinguishing with unclouded reason between good and evil, since Adam by his disobedience incurred all these penalties of crime.
To whom we
must reply18 that there
are three states of man to envisage: one, that of Adam before his
Each one,
then, of these three states somehow supplied to Christ a cause for his
corporeal nature; thus His assumption of a mortal body in order to drive death
far from the human race belongs properly to that state which was laid on man by
way of punishment after Adam's sin, whereas the fact that there was in Christ
no sinful will is borrowed from that state which might have been if Adam had
not surrendered his will to the frauds of the tempter. There remains, then, the
third or middle state, to wit, that which was before death had come and while
the will to sin might yet be present. In this state, therefore, Adam was able
to eat and drink, digest
There is no doubt that Christ was in all points thus conditioned; for He ate and drank and discharged the bodily function of the human body. For we must not think that Adam was at the first subject to such need that unless he ate he could not have lived, but rather that, if he had taken food from every tree, he could have lived for ever, and by that food have escaped death; and so by the fruits of the Garden he satisfied a need.19 And all know that in Christ the same need dwelt, but lying in His own power and not laid upon Him. And this need was in Him before the Resurrection, but after the Resurrection He became such that His human body was changed as Adam's might have been but for the bands of disobedience. Which state, moreover, our Lord Jesus Christ Himself taught us to desire in our prayers, asking that His Will be done as in heaven so on earth, and that His Kingdom come, and that He may deliver us from evil. For all these things are sought in prayer by those members of the human family who rightly believe and who are destined to undergo that most blessed change of all.20
So much have I written to you concerning what I believe should be believed. In which matter if I have said aught amiss, I am not so well pleased with myself as to try to press my effusions in the face of wiser judgment. For if there is no good thing in us there is nothing we should fancy in our opinions. But if all things are good as coming from Him who alone is good, that rather must be thought good which the Unchangeable Good and Cause of all Good indites.
1 Evidently the letter addressed to Pope Symmachus by the Oriental bishops (vide Mansi, Concil. viii. 221ff.), in which they inquire concerning the safe middle way between the heresies of Eutyches and Nestorius. The date of the bishops' letter, and consequently, in all probability, of Boethius's tractate was 512.
2 Obviously his father-in-law Symmachus. Vide p. 76, eius cuius soleo iudicio, etc.
3 Cf. Hor. Serm. i. 3. 82; ii. 3. 40.
4 Cf. infra, de Cons. i. pr. 4 (p. 142) oportet uulnus delegas.
5 Vide supra, p. 75, and De Trin. p. 3.
6 For a similar example of the method of diuisio cf. Cic. De Off. ii. 3. 11. Cf. also Isag. Porph. edit. prima, i. 10. (ed. Brandt, p. 29).
7 Boethius's definition of persona was adopted by St. Thomas (S. ia iae. 29. 1), was regarded as classical by the Schoolmen, and has the approval of modern theologians. Cf. Dorner, Doctrine of Christ, iii. p. 311.
8 Implying a short penultimate.
9 Tusc. ii. 15. 35.
10 For a similar submission of his own opinion to the usage of the Church cf. the end of Tr. i. and of Tr. ii.
11 Cf. the
discussion of aequiuoca=
12
Vniuersalitas=
13 For a similar reductio ad absurdum ending in quod nefas est see Tr. iii. (supra, p. 44) and Cons. v. 3 (infra, p. 374).
14 The ecclesiastical via media, with the relegation of opposing theories to the extremes, which meet in a common fount of falsity, owes something to Aristotle and to our author. Vide infra, p. 118.
15 The use of this kind of argument by Boethius allays any suspicion as to the genuineness of Tr. iv. which might be caused by the use of allegorical interpretation therein. Note also that in the Consolatio the framework is allegory, which is also freely applied in the details.
16 Another reductio ad absurdum or ad impistotem, cf. supra, p. 98, note b.
17 Vide supra, p. 100 note.
18 This respondendum has the true Thomist ring.
19 Adam did not need to eat in order to live, but if he had not eaten he would have suffered hunger, etc.
20 The whole of this passage might be set in Tr. iv. without altering the tone.