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St. Thomas Aquinas
Summa Theologica

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  • FIRST PART (FP: QQ 1-119)
      • Aquin.: SMT FP Q[79] Out. Para. 1/1 - OF THE INTELLECTUAL POWERS (THIRTEEN ARTICLES)
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Aquin.: SMT FP Q[79] Out. Para. 1/1 - OF THE INTELLECTUAL POWERS (THIRTEEN ARTICLES)
The next question concerns the intellectual powers, under which head
there are thirteen points of inquiry:

(1) Whether the intellect is a power of the soul, or its essence?

(2) If it be a power, whether it is a passive power?

(3) If it is a passive power, whether there is an active intellect?

(4) Whether it is something in the soul?

(5) Whether the active intellect is one in all?

(6) Whether memory is in the intellect?

(7) Whether the memory be distinct from the intellect?

(8) Whether the reason is a distinct power from the intellect?

(9) Whether the superior and inferior reason are distinct powers?

(10) Whether the intelligence is distinct from the intellect?

(11) Whether the speculative and practical intellect are distinct powers?

(12) Whether "synderesis" is a power of the intellectual part?

(13) Whether the conscience is a power of the intellectual part?


Aquin.: SMT FP Q[79] A[1] Thes. Para. 1/1

Whether the intellect is a power of the soul?
Aquin.: SMT FP Q[79] A[1] Obj. 1 Para. 1/1

OBJ 1: It would seem that the intellect is not a power of the soul, but
the essence of the soul. For the intellect seems to be the same as the
mind. Now the mind is not a power of the soul, but the essence; for
Augustine says (De Trin. ix, 2): "Mind and spirit are not relative
things, but denominate the essence." Therefore the intellect is the
essence of the soul.

Aquin.: SMT FP Q[79] A[1] Obj. 2 Para. 1/1

OBJ 2: Further, different genera of the soul's powers are not united in
some one power, but only in the essence of the soul. Now the appetitive
and the intellectual are different genera of the soul's powers as the
Philosopher says (De Anima ii, 3), but they are united in the mind, for
Augustine (De Trin. x, 11) places the intelligence and will in the mind.
Therefore the mind and intellect of man is of the very essence of the
soul and not a power thereof.

Aquin.: SMT FP Q[79] A[1] Obj. 3 Para. 1/1

OBJ 3: Further, according to Gregory, in a homily for the Ascension
(xxix in Ev.), "man understands with the angels." But angels are called
"minds" and "intellects." Therefore the mind and intellect of man are not
a power of the soul, but the soul itself.

Aquin.: SMT FP Q[79] A[1] Obj. 4 Para. 1/1

OBJ 4: Further, a substance is intellectual by the fact that it is
immaterial. But the soul is immaterial through its essence. Therefore it
seems that the soul must be intellectual through its essence.

Aquin.: SMT FP Q[79] A[1] OTC Para. 1/1

On the contrary, The Philosopher assigns the intellectual faculty as a
power of the soul (De Anima ii, 3).

Aquin.: SMT FP Q[79] A[1] Body Para. 1/1

I answer that, In accordance with what has been already shown (Q[54],
A[3]; Q[77], A[1]) it is necessary to say that the intellect is a power
of the soul, and not the very essence of the soul. For then alone the
essence of that which operates is the immediate principle of operation,
when operation itself is its being: for as power is to operation as its
act, so is the essence to being. But in God alone His action of
understanding is His very Being. Wherefore in God alone is His intellect
His essence: while in other intellectual creatures, the intellect is
power.

Aquin.: SMT FP Q[79] A[1] R.O. 1 Para. 1/1

Reply OBJ 1: Sense is sometimes taken for the power, and sometimes for
the sensitive soul; for the sensitive soul takes its name from its chief
power, which is sense. And in like manner the intellectual soul is
sometimes called intellect, as from its chief power; and thus we read (De
Anima i, 4), that the "intellect is a substance." And in this sense also
Augustine says that the mind is spirit and essence (De Trin. ix, 2; xiv,
16).

Aquin.: SMT FP Q[79] A[1] R.O. 2 Para. 1/1

Reply OBJ 2: The appetitive and intellectual powers are different genera
of powers in the soul, by reason of the different formalities of their
objects. But the appetitive power agrees partly with the intellectual
power and partly with the sensitive in its mode of operation either
through a corporeal organ or without it: for appetite follows
apprehension. And in this way Augustine puts the will in the mind; and
the Philosopher, in the reason (De Anima iii, 9).

Aquin.: SMT FP Q[79] A[1] R.O. 3 Para. 1/1

Reply OBJ 3: In the angels there is no other power besides the
intellect, and the will, which follows the intellect. And for this reason
an angel is called a "mind" or an "intellect"; because his whole power
consists in this. But the soul has many other powers, such as the
sensitive and nutritive powers, and therefore the comparison fails.

Aquin.: SMT FP Q[79] A[1] R.O. 4 Para. 1/1

Reply OBJ 4: The immateriality of the created intelligent substance is
not its intellect; and through its immateriality it has the power of
intelligence. Wherefore it follows not that the intellect is the
substance of the soul, but that it is its virtue and power.


Aquin.: SMT FP Q[79] A[2] Thes. Para. 1/1

Whether the intellect is a passive power?

Aquin.: SMT FP Q[79] A[2] Obj. 1 Para. 1/1

OBJ 1: It would seem that the intellect is not a passive power. For
everything is passive by its matter, and acts by its form. But the
intellectual power results from the immateriality of the intelligent
substance. Therefore it seems that the intellect is not a passive power.

Aquin.: SMT FP Q[79] A[2] Obj. 2 Para. 1/1

OBJ 2: Further, the intellectual power is incorruptible, as we have said
above (Q[79], A[6]). But "if the intellect is passive, it is corruptible"
(De Anima iii, 5). Therefore the intellectual power is not passive.

Aquin.: SMT FP Q[79] A[2] Obj. 3 Para. 1/1

OBJ 3: Further, the "agent is nobler than the patient," as Augustine
(Gen. ad lit. xii, 16) and Aristotle (De Anima iii, 5) says. But all the
powers of the vegetative part are active; yet they are the lowest among
the powers of the soul. Much more, therefore, all the intellectual
powers, which are the highest, are active.

Aquin.: SMT FP Q[79] A[2] OTC Para. 1/1

On the contrary, The Philosopher says (De Anima iii, 4) that "to
understand is in a way to be passive."

Aquin.: SMT FP Q[79] A[2] Body Para. 1/2

I answer that, To be passive may be taken in three ways. Firstly, in its
most strict sense, when from a thing is taken something which belongs to
it by virtue either of its nature, or of its proper inclination: as when
water loses coolness by heating, and as when a man becomes ill or sad.
Secondly, less strictly, a thing is said to be passive, when something,
whether suitable or unsuitable, is taken away from it. And in this way
not only he who is ill is said to be passive, but also he who is healed;
not only he that is sad, but also he that is joyful; or whatever way he
be altered or moved. Thirdly, in a wide sense a thing is said to be
passive, from the very fact that what is in potentiality to something
receives that to which it was in potentiality, without being deprived of
anything. And accordingly, whatever passes from potentiality to act, may
be said to be passive, even when it is perfected. And thus with us to
understand is to be passive. This is clear from the following reason. For
the intellect, as we have seen above (Q[78], A[1]), has an operation
extending to universal being. We may therefore see whether the intellect
be in act or potentiality by observing first of all the nature of the
relation of the intellect to universal being. For we find an intellect
whose relation to universal being is that of the act of all being: and
such is the Divine intellect, which is the Essence of God, in which
originally and virtually, all being pre-exists as in its first cause. And
therefore the Divine intellect is not in potentiality, but is pure act.
But no created intellect can be an act in relation to the whole universal
being; otherwise it would needs be an infinite being. Wherefore every
created intellect is not the act of all things intelligible, by reason of
its very existence; but is compared to these intelligible things as a
potentiality to act.

Aquin.: SMT FP Q[79] A[2] Body Para. 2/2

Now, potentiality has a double relation to act. There is a potentiality
which is always perfected by its act: as the matter of the heavenly
bodies (Q[58], A[1]). And there is another potentiality which is not
always in act, but proceeds from potentiality to act; as we observe in
things that are corrupted and generated. Wherefore the angelic intellect
is always in act as regards those things which it can understand, by
reason of its proximity to the first intellect, which is pure act, as we
have said above. But the human intellect, which is the lowest in the
order of intelligence and most remote from the perfection of the Divine
intellect, is in potentiality with regard to things intelligible, and is
at first "like a clean tablet on which nothing is written," as the
Philosopher says (De Anima iii, 4). This is made clear from the fact,
that at first we are only in potentiality to understand, and afterwards
we are made to understand actually. And so it is evident that with us to
understand is "in a way to be passive"; taking passion in the third
sense. And consequently the intellect is a passive power.

Aquin.: SMT FP Q[79] A[2] R.O. 1 Para. 1/1

Reply OBJ 1: This objection is verified of passion in the first and
second senses, which belong to primary matter. But in the third sense
passion is in anything which is reduced from potentiality to act.

Aquin.: SMT FP Q[79] A[2] R.O. 2 Para. 1/1

Reply OBJ 2: "Passive intellect" is the name given by some to the
sensitive appetite, in which are the passions of the soul; which appetite
is also called "rational by participation," because it "obeys the reason"
(Ethic. i, 13). Others give the name of passive intellect to the
cogitative power, which is called the "particular reason." And in each
case "passive" may be taken in the two first senses; forasmuch as this
so-called intellect is the act of a corporeal organ. But the intellect
which is in potentiality to things intelligible, and which for this
reason Aristotle calls the "possible" intellect (De Anima iii, 4) is not
passive except in the third sense: for it is not an act of a corporeal
organ. Hence it is incorruptible.

Aquin.: SMT FP Q[79] A[2] R.O. 3 Para. 1/1

Reply OBJ 3: The agent is nobler than the patient, if the action and the
passion are referred to the same thing: but not always, if they refer to
different things. Now the intellect is a passive power in regard to the
whole universal being: while the vegetative power is active in regard to
some particular thing, namely, the body as united to the soul. Wherefore
nothing prevents such a passive force being nobler than such an active
one.


Aquin.: SMT FP Q[79] A[3] Thes. Para. 1/1

Whether there is an active intellect?

Aquin.: SMT FP Q[79] A[3] Obj. 1 Para. 1/1

OBJ 1: It would seem that there is no active intellect. For as the
senses are to things sensible, so is our intellect to things
intelligible. But because sense is in potentiality to things sensible,
the sense is not said to be active, but only passive. Therefore, since
our intellect is in potentiality to things intelligible, it seems that we
cannot say that the intellect is active, but only that it is passive.

Aquin.: SMT FP Q[79] A[3] Obj. 2 Para. 1/1

OBJ 2: Further, if we say that also in the senses there is something
active, such as light: on the contrary, light is required for sight,
inasmuch as it makes the medium to be actually luminous; for color of its
own nature moves the luminous medium. But in the operation of the
intellect there is no appointed medium that has to be brought into act.
Therefore there is no necessity for an active intellect.

Aquin.: SMT FP Q[79] A[3] Obj. 3 Para. 1/1

OBJ 3: Further, the likeness of the agent is received into the patient
according to the nature of the patient. But the passive intellect is an
immaterial power. Therefore its immaterial nature suffices for forms to
be received into it immaterially. Now a form is intelligible in act from
the very fact that it is immaterial. Therefore there is no need for an
active intellect to make the species actually intelligible.

Aquin.: SMT FP Q[79] A[3] OTC Para. 1/1

On the contrary, The Philosopher says (De Anima iii, 5), "As in every
nature, so in the soul is there something by which it becomes all things,
and something by which it makes all things." Therefore we must admit an
active intellect.

Aquin.: SMT FP Q[79] A[3] Body Para. 1/1

I answer that, According to the opinion of Plato, there is no need for
an active intellect in order to make things actually intelligible; but
perhaps in order to provide intellectual light to the intellect, as will
be explained farther on (A[4]). For Plato supposed that the forms of
natural things subsisted apart from matter, and consequently that they
are intelligible: since a thing is actually intelligible from the very
fact that it is immaterial. And he called such forms "species or ideas";
from a participation of which, he said that even corporeal matter was
formed, in order that individuals might be naturally established in their
proper genera and species: and that our intellect was formed by such
participation in order to have knowledge of the genera and species of
things. But since Aristotle did not allow that forms of natural things
exist apart from matter, and as forms existing in matter are not actually
intelligible; it follows that the natures of forms of the sensible things
which we understand are not actually intelligible. Now nothing is reduced
from potentiality to act except by something in act; as the senses as
made actual by what is actually sensible. We must therefore assign on the
part of the intellect some power to make things actually intelligible, by
abstraction of the species from material conditions. And such is the
necessity for an active intellect.

Aquin.: SMT FP Q[79] A[3] R.O. 1 Para. 1/1

Reply OBJ 1: Sensible things are found in act outside the soul; and
hence there is no need for an active sense. Wherefore it is clear that in
the nutritive part all the powers are active, whereas in the sensitive
part all are passive: but in the intellectual part, there is something
active and something passive.

Aquin.: SMT FP Q[79] A[3] R.O. 2 Para. 1/1

Reply OBJ 2: There are two opinions as to the effect of light. For some
say that light is required for sight, in order to make colors actually
visible. And according to this the active intellect is required for
understanding, in like manner and for the same reason as light is
required for seeing. But in the opinion of others, light is required for
sight; not for the colors to become actually visible; but in order that
the medium may become actually luminous, as the Commentator says on De
Anima ii. And according to this, Aristotle's comparison of the active
intellect to light is verified in this, that as it is required for
understanding, so is light required for seeing; but not for the same
reason.

Aquin.: SMT FP Q[79] A[3] R.O. 3 Para. 1/1

Reply OBJ 3: If the agent pre-exist, it may well happen that its
likeness is received variously into various things, on account of their
dispositions. But if the agent does not pre-exist, the disposition of the
recipient has nothing to do with the matter. Now the intelligible in act
is not something existing in nature; if we consider the nature of things
sensible, which do not subsist apart from matter. And therefore in order
to understand them, the immaterial nature of the passive intellect would
not suffice but for the presence of the active intellect which makes
things actually intelligible by way of abstraction.



Aquin.: SMT FP Q[79] A[4] Thes. Para. 1/1

Whether the active intellect is something in the soul?

Aquin.: SMT FP Q[79] A[4] Obj. 1 Para. 1/1

OBJ 1: It would seem that the active intellect is not something in the
soul. For the effect of the active intellect is to give light for the
purpose of understanding. But this is done by something higher than the
soul: according to Jn. 1:9, "He was the true light that enlighteneth
every man coming into this world." Therefore the active intellect is not
something in the soul.

Aquin.: SMT FP Q[79] A[4] Obj. 2 Para. 1/1

OBJ 2: Further, the Philosopher (De Anima iii, 5) says of the active
intellect, "that it does not sometimes understand and sometimes not
understand." But our soul does not always understand: sometimes it
understands, sometimes it does not understand. Therefore the active
intellect is not something in our soul.

Aquin.: SMT FP Q[79] A[4] Obj. 3 Para. 1/1

OBJ 3: Further, agent and patient suffice for action. If, therefore, the
passive intellect, which is a passive power, is something belonging to
the soul; and also the active intellect, which is an active power: it
follows that a man would always be able to understand when he wished,
which is clearly false. Therefore the active intellect is not something
in our soul.

Aquin.: SMT FP Q[79] A[4] Obj. 4 Para. 1/1

OBJ 4: Further, the Philosopher (De Anima iii, 5) says that the active
intellect is a "substance in actual being." But nothing can be in
potentiality and in act with regard to the same thing. If, therefore, the
passive intellect, which is in potentiality to all things intelligible,
is something in the soul, it seems impossible for the active intellect to
be also something in our soul.

Aquin.: SMT FP Q[79] A[4] Obj. 5 Para. 1/1

OBJ 5: Further, if the active intellect is something in the soul, it
must be a power. For it is neither a passion nor a habit; since habits
and passions are not in the nature of agents in regard to the passivity
of the soul; but rather passion is the very action of the passive power;
while habit is something which results from acts. But every power flows
from the essence of the soul. It would therefore follow that the active
intellect flows from the essence of the soul. And thus it would not be in
the soul by way of participation from some higher intellect: which is
unfitting. Therefore the active intellect is not something in our soul.

Aquin.: SMT FP Q[79] A[4] OTC Para. 1/1

On the contrary, The Philosopher says (De Anima iii, 5), that "it is
necessary for these differences," namely, the passive and active
intellect, "to be in the soul."

Aquin.: SMT FP Q[79] A[4] Body Para. 1/2

I answer that, The active intellect, of which the Philosopher speaks, is
something in the soul. In order to make this evident, we must observe
that above the intellectual soul of man we must needs suppose a superior
intellect, from which the soul acquires the power of understanding. For
what is such by participation, and what is mobile, and what is imperfect
always requires the pre-existence of something essentially such,
immovable and perfect. Now the human soul is called intellectual by
reason of a participation in intellectual power; a sign of which is that
it is not wholly intellectual but only in part. Moreover it reaches to
the understanding of truth by arguing, with a certain amount of reasoning
and movement. Again it has an imperfect understanding; both because it
does not understand everything, and because, in those things which it
does understand, it passes from potentiality to act. Therefore there must
needs be some higher intellect, by which the soul is helped to understand.

Aquin.: SMT FP Q[79] A[4] Body Para. 2/2

Wherefore some held that this intellect, substantially separate, is the
active intellect, which by lighting up the phantasms as it were, makes
them to be actually intelligible. But, even supposing the existence of
such a separate active intellect, it would still be necessary to assign
to the human soul some power participating in that superior intellect, by
which power the human soul makes things actually intelligible. Just as in
other perfect natural things, besides the universal active causes, each
one is endowed with its proper powers derived from those universal
causes: for the sun alone does not generate man; but in man is the power
of begetting man: and in like manner with other perfect animals. Now
among these lower things nothing is more perfect than the human soul.
Wherefore we must say that in the soul is some power derived from a
higher intellect, whereby it is able to light up the phantasms. And we
know this by experience, since we perceive that we abstract universal
forms from their particular conditions, which is to make them actually
intelligible. Now no action belongs to anything except through some
principle formally inherent therein; as we have said above of the passive
intellect (Q[76], A[1]). Therefore the power which is the principle of
this action must be something in the soul. For this reason Aristotle (De
Anima iii, 5) compared the active intellect to light, which is something
received into the air: while Plato compared the separate intellect
impressing the soul to the sun, as Themistius says in his commentary on
De Anima iii. But the separate intellect, according to the teaching of
our faith, is God Himself, Who is the soul's Creator, and only beatitude;
as will be shown later on (Q[90], A[3]; FS, Q[3], A[7]). Wherefore the
human soul derives its intellectual light from Him, according to Ps. 4:7,
"The light of Thy countenance, O Lord, is signed upon us."

Aquin.: SMT FP Q[79] A[4] R.O. 1 Para. 1/1

Reply OBJ 1: That true light enlightens as a universal cause, from which
the human soul derives a particular power, as we have explained.

Aquin.: SMT FP Q[79] A[4] R.O. 2 Para. 1/1

Reply OBJ 2: The Philosopher says those words not of the active
intellect, but of the intellect in act: of which he had already said:
"Knowledge in act is the same as the thing." Or, if we refer those words
to the active intellect, then they are said because it is not owing to
the active intellect that sometimes we do, and sometimes we do not
understand, but to the intellect which is in potentiality.

Aquin.: SMT FP Q[79] A[4] R.O. 3 Para. 1/1

Reply OBJ 3: If the relation of the active intellect to the passive were
that of the active object to a power, as, for instance, of the visible
in act to the sight; it would follow that we could understand all things
instantly, since the active intellect is that which makes all things (in
act). But now the active intellect is not an object, rather is it that whereby the objects are made to be in act: for which, besides the
presence of the active intellect, we require the presence of phantasms,
the good disposition of the sensitive powers, and practice in this sort
of operation; since through one thing understood, other things come to be
understood, as from terms are made propositions, and from first
principles, conclusions. From this point of view it matters not whether
the active intellect is something belonging to the soul, or something
separate from the soul.

Aquin.: SMT FP Q[79] A[4] R.O. 4 Para. 1/1

Reply OBJ 4: The intellectual soul is indeed actually immaterial, but it
is in potentiality to determinate species. On the contrary, phantasms are
actual images of certain species, but are immaterial in potentiality.
Wherefore nothing prevents one and the same soul, inasmuch as it is
actually immaterial, having one power by which it makes things actually
immaterial, by abstraction from the conditions of individual matter:
which power is called the "active intellect"; and another power,
receptive of such species, which is called the "passive intellect" by
reason of its being in potentiality to such species.

Aquin.: SMT FP Q[79] A[4] R.O. 5 Para. 1/1

Reply OBJ 5: Since the essence of the soul is immaterial, created by the
supreme intellect, nothing prevents that power which it derives from the
supreme intellect, and whereby it abstracts from matter, flowing from the
essence of the soul, in the same way as its other powers.


Aquin.: SMT FP Q[79] A[5] Thes. Para. 1/1

Whether the active intellect is one in all?

Aquin.: SMT FP Q[79] A[5] Obj. 1 Para. 1/1

OBJ 1: It would seem that there is one active intellect in all. For what
is separate from the body is not multiplied according to the number of
bodies. But the active intellect is "separate," as the Philosopher says
(De Anima iii, 5). Therefore it is not multiplied in the many human
bodies, but is one for all men.

Aquin.: SMT FP Q[79] A[5] Obj. 2 Para. 1/1

OBJ 2: Further, the active intellect is the cause of the universal,
which is one in many. But that which is the cause of unity is still more
itself one. Therefore the active intellect is the same in all.

Aquin.: SMT FP Q[79] A[5] Obj. 3 Para. 1/1

OBJ 3: Further, all men agree in the first intellectual concepts. But to
these they assent by the active intellect. Therefore all agree in one
active intellect.

Aquin.: SMT FP Q[79] A[5] OTC Para. 1/1

On the contrary, The Philosopher says (De Anima iii, 5) that the active
intellect is as a light. But light is not the same in the various things
enlightened. Therefore the same active intellect is not in various men.

Aquin.: SMT FP Q[79] A[5] Body Para. 1/1

I answer that, The truth about this question depends on what we have
already said (A[4]). For if the active intellect were not something
belonging to the soul, but were some separate substance, there would be
one active intellect for all men. And this is what they mean who hold
that there is one active intellect for all. But if the active intellect
is something belonging to the soul, as one of its powers, we are bound to
say that there are as many active intellects as there are souls, which
are multiplied according to the number of men, as we have said above
(Q[76], A[2]). For it is impossible that one same power belong to various
substances.

Aquin.: SMT FP Q[79] A[5] R.O. 1 Para. 1/1

Reply OBJ 1: The Philosopher proves that the active intellect is
separate, by the fact that the passive intellect is separate: because, as
he says (De Anima iii, 5), "the agent is more noble than the patient."
Now the passive intellect is said to be separate, because it is not the
act of any corporeal organ. And in the same sense the active intellect is
also called "separate"; but not as a separate substance.

Aquin.: SMT FP Q[79] A[5] R.O. 2 Para. 1/1

Reply OBJ 2: The active intellect is the cause of the universal, by
abstracting it from matter. But for this purpose it need not be the same
intellect in all intelligent beings; but it must be one in its
relationship to all those things from which it abstracts the universal,
with respect to which things the universal is one. And this befits the
active intellect inasmuch as it is immaterial.

Aquin.: SMT FP Q[79] A[5] R.O. 3 Para. 1/1

Reply OBJ 3: All things which are of one species enjoy in common the
action which accompanies the nature of the species, and consequently the power which is the principle of such action; but not so as that power be
identical in all. Now to know the first intelligible principles is the
action belonging to the human species. Wherefore all men enjoy in common
the power which is the principle of this action: and this power is the
active intellect. But there is no need for it to be identical in all. Yet
it must be derived by all from one principle. And thus the possession by
all men in common of the first principles proves the unity of the
separate intellect, which Plato compares to the sun; but not the unity of
the active intellect, which Aristotle compares to light.


Aquin.: SMT FP Q[79] A[6] Thes. Para. 1/1

Whether memory is in the intellectual part of the soul?

Aquin.: SMT FP Q[79] A[6] Obj. 1 Para. 1/1

OBJ 1: It would seem that memory is not in the intellectual part of the
soul. For Augustine says (De Trin. xii, 2,3,8) that to the higher part of
the soul belongs those things which are not "common to man and beast."
But memory is common to man and beast, for he says (De Trin. xii, 2,3,8)
that "beasts can sense corporeal things through the senses of the body,
and commit them to memory." Therefore memory does not belong to the
intellectual part of the soul.
Aquin.: SMT FP Q[79] A[6] Obj. 2 Para. 1/1

OBJ 2: Further, memory is of the past. But the past is said of something
with regard to a fixed time. Memory, therefore, knows a thing under a
condition of a fixed time; which involves knowledge under the conditions of "here" and "now." But this is not the province of the intellect, but
of the sense. Therefore memory is not in the intellectual part, but only
in the sensitive.

Aquin.: SMT FP Q[79] A[6] Obj. 3 Para. 1/1

OBJ 3: Further, in the memory are preserved the species of those things
of which we are not actually thinking. But this cannot happen in the
intellect, because the intellect is reduced to act by the fact that the
intelligible species are received into it. Now the intellect in act
implies understanding in act; and therefore the intellect actually
understands all things of which it has the species. Therefore the memory
is not in the intellectual part.

Aquin.: SMT FP Q[79] A[6] OTC Para. 1/1

On the contrary, Augustine says (De Trin. x, 11) that "memory,
understanding, and will are one mind."

Aquin.: SMT FP Q[79] A[6] Body Para. 1/3

I answer that, Since it is of the nature of the memory to preserve the
species of those things which are not actually apprehended, we must first
of all consider whether the intelligible species can thus be preserved in
the intellect: because Avicenna held that this was impossible. For he
admitted that this could happen in the sensitive part, as to some powers,
inasmuch as they are acts of corporeal organs, in which certain species
may be preserved apart from actual apprehension. But in the intellect,
which has no corporeal organ, nothing but what is intelligible exists.
Wherefore every thing of which the likeness exists in the intellect must
be actually understood. Thus, therefore, according to him, as soon as we
cease to understand something actually, the species of that thing ceases
to be in our intellect, and if we wish to understand that thing anew, we
must turn to the active intellect, which he held to be a separate
substance, in order that the intelligible species may thence flow again
into our passive intellect. And from the practice and habit of turning to
the active intellect there is formed, according to him, a certain
aptitude in the passive intellect for turning to the active intellect;
which aptitude he calls the habit of knowledge. According, therefore, to
this supposition, nothing is preserved in the intellectual part that is
not actually understood: wherefore it would not be possible to admit
memory in the intellectual part.

Aquin.: SMT FP Q[79] A[6] Body Para. 2/3

But this opinion is clearly opposed to the teaching of Aristotle. For he
says (De Anima iii, 4) that, when the passive intellect "is identified
with each thing as knowing it, it is said to be in act," and that "this
happens when it can operate of itself. And, even then, it is in
potentiality, but not in the same way as before learning and
discovering." Now, the passive intellect is said to be each thing,
inasmuch as it receives the intelligible species of each thing. To the
fact, therefore, that it receives the species of intelligible things it
owes its being able to operate when it wills, but not so that it be always operating: for even then is it in potentiality in a certain sense,
though otherwise than before the act of understanding - namely, in the
sense that whoever has habitual knowledge is in potentiality to actual
consideration.

Aquin.: SMT FP Q[79] A[6] Body Para. 3/3

The foregoing opinion is also opposed to reason. For what is received
into something is received according to the conditions of the recipient.
But the intellect is of a more stable nature, and is more immovable than
corporeal nature. If, therefore, corporeal matter holds the forms which
it receives, not only while it actually does something through them, but
also after ceasing to act through them, much more cogent reason is there
for the intellect to receive the species unchangeably and lastingly,
whether it receive them from things sensible, or derive them from some
superior intellect. Thus, therefore, if we take memory only for the power
of retaining species, we must say that it is in the intellectual part.
But if in the notion of memory we include its object as something past,
then the memory is not in the intellectual, but only in the sensitive
part, which apprehends individual things. For past, as past, since it
signifies being under a condition of fixed time, is something individual.

Aquin.: SMT FP Q[79] A[6] R.O. 1 Para. 1/1

Reply OBJ 1: Memory, if considered as retentive of species, is not
common to us and other animals. For species are not retained in the
sensitive part of the soul only, but rather in the body and soul united:
since the memorative power is the act of some organ. But the intellect in
itself is retentive of species, without the association of any corporeal
organ. Wherefore the Philosopher says (De Anima iii, 4) that "the soul is
the seat of the species, not the whole soul, but the intellect."

Aquin.: SMT FP Q[79] A[6] R.O. 2 Para. 1/1

Reply OBJ 2: The condition of past may be referred to two
things - namely, to the object which is known, and to the act of
knowledge. These two are found together in the sensitive part, which
apprehends something from the fact of its being immuted by a present
sensible: wherefore at the same time an animal remembers to have sensed
before in the past, and to have sensed some past sensible thing. But as
concerns the intellectual part, the past is accidental, and is not in
itself a part of the object of the intellect. For the intellect
understands man, as man: and to man, as man, it is accidental that he
exist in the present, past, or future. But on the part of the act, the
condition of past, even as such, may be understood to be in the
intellect, as well as in the senses. Because our soul's act of
understanding is an individual act, existing in this or that time,
inasmuch as a man is said to understand now, or yesterday, or tomorrow.
And this is not incompatible with the intellectual nature: for such an
act of understanding, though something individual, is yet an immaterial
act, as we have said above of the intellect (Q[76], A[1]); and therefore,
as the intellect understands itself, though it be itself an individual
intellect, so also it understands its act of understanding, which is an
individual act, in the past, present, or future. In this way, then, the
notion of memory, in as far as it regards past events, is preserved in
the intellect, forasmuch as it understands that it previously understood:
but not in the sense that it understands the past as something "here" and
"now."

Aquin.: SMT FP Q[79] A[6] R.O. 3 Para. 1/1

Reply OBJ 3: The intelligible species is sometimes in the intellect only
in potentiality, and then the intellect is said to be in potentiality.
Sometimes the intelligible species is in the intellect as regards the
ultimate completion of the act, and then it understands in act. And
sometimes the intelligible species is in a middle state, between
potentiality and act: and then we have habitual knowledge. In this way
the intellect retains the species, even when it does not understand in
act.


Aquin.: SMT FP Q[79] A[7] Thes. Para. 1/1

Whether the intellectual memory is a power distinct from the intellect?

Aquin.: SMT FP Q[79] A[7] Obj. 1 Para. 1/1

OBJ 1: It would seem that the intellectual memory is distinct from the
intellect. For Augustine (De Trin. x, 11) assigns to the soul memory,
understanding, and will. But it is clear that the memory is a distinct
power from the will. Therefore it is also distinct from the intellect.
Aquin.: SMT FP Q[79] A[7] Obj. 2 Para. 1/1

OBJ 2: Further, the reason of distinction among the powers in the
sensitive part is the same as in the intellectual part. But memory in the
sensitive part is distinct from sense, as we have said (Q[78], A[4]).
Therefore memory in the intellectual part is distinct from the intellect.

Aquin.: SMT FP Q[79] A[7] Obj. 3 Para. 1/1

OBJ 3: Further, according to Augustine (De Trin. x, 11; xi, 7), memory,
understanding, and will are equal to one another, and one flows from the
other. But this could not be if memory and intellect were the same power.
Therefore they are not the same power.

Aquin.: SMT FP Q[79] A[7] OTC Para. 1/1

On the contrary, From its nature the memory is the treasury or
storehouse of species. But the Philosopher (De Anima iii) attributes this
to the intellect, as we have said (A[6], ad 1). Therefore the memory is
not another power from the intellect.

Aquin.: SMT FP Q[79] A[7] Body Para. 1/1

I answer that, As has been said above (Q[77], A[3]), the powers of the
soul are distinguished by the different formal aspects of their objects:
since each power is defined in reference to that thing to which it is
directed and which is its object. It has also been said above (Q[59], A[4]) that if any power by its nature be directed to an object according
to the common ratio of the object, that power will not be differentiated
according to the individual differences of that object: just as the power
of sight, which regards its object under the common ratio of color, is
not differentiated by differences of black and white. Now, the intellect
regards its object under the common ratio of being: since the passive
intellect is that "in which all are in potentiality." Wherefore the
passive intellect is not differentiated by any difference of being.
Nevertheless there is a distinction between the power of the active
intellect and of the passive intellect: because as regards the same
object, the active power which makes the object to be in act must be
distinct from the passive power, which is moved by the object existing in
act. Thus the active power is compared to its object as a being in act is
to a being in potentiality; whereas the passive power, on the contrary,
is compared to its object as being in potentiality is to a being in act.
Therefore there can be no other difference of powers in the intellect,
but that of passive and active. Wherefore it is clear that memory is not
a distinct power from the intellect: for it belongs to the nature of a
passive power to retain as well as to receive.

Aquin.: SMT FP Q[79] A[7] R.O. 1 Para. 1/1

Reply OBJ 1: Although it is said (3 Sent. D, 1) that memory, intellect,
and will are three powers, this is not in accordance with the meaning of
Augustine, who says expressly (De Trin. xiv) that "if we take memory,
intelligence, and will as always present in the soul, whether we actually
attend to them or not, they seem to pertain to the memory only. And by
intelligence I mean that by which we understand when actually thinking;
and by will I mean that love or affection which unites the child and its
parent." Wherefore it is clear that Augustine does not take the above
three for three powers; but by memory he understands the soul's habit of
retention; by intelligence, the act of the intellect; and by will, the
act of the will.

Aquin.: SMT FP Q[79] A[7] R.O. 2 Para. 1/1

Reply OBJ 2: Past and present may differentiate the sensitive powers,
but not the intellectual powers, for the reason give above.

Aquin.: SMT FP Q[79] A[7] R.O. 3 Para. 1/1

Reply OBJ 3: Intelligence arises from memory, as act from habit; and in
this way it is equal to it, but not as a power to a power.


Aquin.: SMT FP Q[79] A[8] Thes. Para. 1/1

Whether the reason is distinct from the intellect?

Aquin.: SMT FP Q[79] A[8] Obj. 1 Para. 1/1

OBJ 1: It would seem that the reason is a distinct power from the
intellect. For it is stated in De Spiritu et Anima that "when we wish to
rise from lower things to higher, first the sense comes to our aid, then
imagination, then reason, then the intellect." Therefore the reason is
distinct from the intellect, as imagination is from sense.

Aquin.: SMT FP Q[79] A[8] Obj. 2 Para. 1/1

OBJ 2: Further, Boethius says (De Consol. iv, 6), that intellect is
compared to reason, as eternity to time. But it does not belong to the
same power to be in eternity and to be in time. Therefore reason and
intellect are not the same power.

Aquin.: SMT FP Q[79] A[8] Obj. 3 Para. 1/1

OBJ 3: Further, man has intellect in common with the angels, and sense
in common with the brutes. But reason, which is proper to man, whence he
is called a rational animal, is a power distinct from sense. Therefore is
it equally true to say that it is distinct from the intellect, which
properly belongs to the angel: whence they are called intellectual.

Aquin.: SMT FP Q[79] A[8] OTC Para. 1/1

On the contrary, Augustine says (Gen. ad lit. iii, 20) that "that in
which man excels irrational animals is reason, or mind, or intelligence
or whatever appropriate name we like to give it." Therefore, reason,
intellect and mind are one power.

Aquin.: SMT FP Q[79] A[8] Body Para. 1/1

I answer that, Reason and intellect in man cannot be distinct powers.
We shall understand this clearly if we consider their respective actions.
For to understand is simply to apprehend intelligible truth: and to
reason is to advance from one thing understood to another, so as to know
an intelligible truth. And therefore angels, who according to their
nature, possess perfect knowledge of intelligible truth, have no need to
advance from one thing to another; but apprehend the truth simply and
without mental discussion, as Dionysius says (Div. Nom. vii). But man
arrives at the knowledge of intelligible truth by advancing from one
thing to another; and therefore he is called rational. Reasoning,
therefore, is compared to understanding, as movement is to rest, or
acquisition to possession; of which one belongs to the perfect, the other
to the imperfect. And since movement always proceeds from something
immovable, and ends in something at rest; hence it is that human
reasoning, by way of inquiry and discovery, advances from certain things
simply understood - namely, the first principles; and, again, by way of
judgment returns by analysis to first principles, in the light of which
it examines what it has found. Now it is clear that rest and movement are
not to be referred to different powers, but to one and the same, even in
natural things: since by the same nature a thing is moved towards a
certain place. Much more, therefore, by the same power do we understand
and reason: and so it is clear that in man reason and intellect are the
same power.

Aquin.: SMT FP Q[79] A[8] R.O. 1 Para. 1/1

Reply OBJ 1: That enumeration is made according to the order of actions,
not according to the distinction of powers. Moreover, that book is not of
great authority.

Aquin.: SMT FP Q[79] A[8] R.O. 2 Para. 1/1

Reply OBJ 2: The answer is clear from what we have said. For eternity is
compared to time as immovable to movable. And thus Boethius compared the
intellect to eternity, and reason to time.

Aquin.: SMT FP Q[79] A[8] R.O. 3 Para. 1/1

Reply OBJ 3: Other animals are so much lower than man that they cannot
attain to the knowledge of truth, which reason seeks. But man attains,
although imperfectly, to the knowledge of intelligible truth, which
angels know. Therefore in the angels the power of knowledge is not of a
different genus fro that which is in the human reason, but is compared to
it as the perfect to the imperfect.

Aquin.: SMT FP Q[79] A[9] Thes. Para. 1/1

Whether the higher and lower reason are distinct powers?

Aquin.: SMT FP Q[79] A[9] Obj. 1 Para. 1/1

OBJ 1: It would seem that the higher and lower reason are distinct
powers. For Augustine says (De Trin. xii, 4,7), that the image of the
Trinity is in the higher part of the reason, and not in the lower. But
the parts of the soul are its powers. Therefore the higher and lower
reason are two powers.

Aquin.: SMT FP Q[79] A[9] Obj. 2 Para. 1/1

OBJ 2: Further, nothing flows from itself. Now, the lower reason flows
from the higher, and is ruled and directed by it. Therefore the higher
reason is another power from the lower.

Aquin.: SMT FP Q[79] A[9] Obj. 3 Para. 1/1

OBJ 3: Further, the Philosopher says (Ethic. vi, 1) that "the
scientific part" of the soul, by which the soul knows necessary things,
is another principle, and another part from the "opinionative" and
"reasoning" part by which it knows contingent things. And he proves this
from the principle that for those things which are "generically
different, generically different parts of the soul are ordained." Now
contingent and necessary are generically different, as corruptible and
incorruptible. Since, therefore, necessary is the same as eternal, and
temporal the same as contingent, it seems that what the Philosopher calls
the "scientific" part must be the same as the higher reason, which,
according to Augustine (De Trin. xii, 7) "is intent on the consideration
and consultation of things eternal"; and that what the Philosopher calls
the "reasoning" or "opinionative" part is the same as the lower reason,
which, according to Augustine, "is intent on the disposal of temporal
things." Therefore the higher reason is another power than the lower.
Aquin.: SMT FP Q[79] A[9] Obj. 4 Para. 1/1

OBJ 4: Further, Damascene says (De Fide Orth. ii) that "opinion rises
from the imagination: then the mind by judging of the truth or error of
the opinion discovers the truth: whence" men's (mind) "is derived from"
metiendo [measuring]. "And therefore the intellect regards those things
which are already subject to judgment and true decision." Therefore the
opinionative power, which is the lower reason, is distinct from the mind
and the intellect, by which we may understand the higher reason.

Aquin.: SMT FP Q[79] A[9] OTC Para. 1/1

On the contrary, Augustine says (De Trin. xii, 4) that "the higher and
lower reason are only distinct by their functions." Therefore they are
not two powers.

Aquin.: SMT FP Q[79] A[9] Body Para. 1/2

I answer that, The higher and lower reason, as they are understood by
Augustine, can in no way be two powers of the soul. For he says that "the
higher reason is that which is intent on the contemplation and
consultation of things eternal": forasmuch as in contemplation it sees
them in themselves, and in consultation it takes its rules of action from
them. But he calls the lower reason that which "is intent on the disposal
of temporal things." Now these two - namely, eternal and temporal - are
related to our knowledge in this way, that one of them is the means of
knowing the other. For by way of discovery, we come through knowledge of
temporal things to that of things eternal, according to the words of the
Apostle (Rm. 1:20), "The invisible things of God are clearly seen, being
understood by the things that are made": while by way of judgment, from
eternal things already known, we judge of temporal things, and according
to laws of things eternal we dispose of temporal things.

Aquin.: SMT FP Q[79] A[9] Body Para. 2/2

But it may happen that the medium and what is attained thereby belong to
different habits: as the first indemonstrable principles belong to the
habit of the intellect; whereas the conclusions which we draw from them
belong to the habit of science. And so it happens that from the
principles of geometry we draw a conclusion in another science - for
example, perspective. But the power of the reason is such that both
medium and term belong to it. For the act of the reason is, as it were,
a movement from one thing to another. But the same movable thing passes
through the medium and reaches the end. Wherefore the higher and lower
reasons are one and the same power. But according to Augustine they are
distinguished by the functions of their actions, and according to their
various habits: for wisdom is attributed to the higher reason, science to
the lower.

Aquin.: SMT FP Q[79] A[9] R.O. 1 Para. 1/1

Reply OBJ 1: We speak of parts, in whatever way a thing is divided. And
so far as reason is divided according to its various acts, the higher and
lower reason are called parts; but not because they are different powers.

Aquin.: SMT FP Q[79] A[9] R.O. 2 Para. 1/1

Reply OBJ 2: The lower reason is said to flow from the higher, or to be
ruled by it, as far as the principles made use of by the lower reason are
drawn from and directed by the principles of the higher reason.

Aquin.: SMT FP Q[79] A[9] R.O. 3 Para. 1/1

Reply OBJ 3: The "scientific" part, of which the Philosopher speaks, is
not the same as the higher reason: for necessary truths are found even
among temporal things, of which natural science and mathematics treat. And the "opinionative" and "ratiocinative" part is more limited than the
lower reason; for it regards only things contingent. Neither must we say,
without any qualification, that a power, by which the intellect knows
necessary things, is distinct from a power by which it knows contingent
things: because it knows both under the same objective aspect - namely,
under the aspect of being and truth. Wherefore it perfectly knows
necessary things which have perfect being in truth; since it penetrates
to their very essence, from which it demonstrates their proper accidents.
On the other hand, it knows contingent things, but imperfectly; forasmuch
as they have but imperfect being and truth. Now perfect and imperfect in
the action do not vary the power, but they vary the actions as to the
mode of acting, and consequently the principles of the actions and the
habits themselves. And therefore the Philosopher postulates two lesser
parts of the soul - namely, the "scientific" and the "ratiocinative," not
because they are two powers, but because they are distinct according to a
different aptitude for receiving various habits, concerning the variety
of which he inquires. For contingent and necessary, though differing
according to their proper genera, nevertheless agree in the common aspect
of being, which the intellect considers, and to which they are variously
compared as perfect and imperfect.

Aquin.: SMT FP Q[79] A[9] R.O. 4 Para. 1/1

Reply OBJ 4: That distinction given by Damascene is according to the
variety of acts, not according to the variety of powers. For "opinion"
signifies an act of the intellect which leans to one side of a
contradiction, whilst in fear of the other. While to "judge" or "measure"
[mensurare] is an act of the intellect, applying certain principles to
examine propositions. From this is taken the word "mens" [mind]. Lastly,
to "understand" is to adhere to the formed judgment with approval.


Aquin.: SMT FP Q[79] A[10] Thes. Para. 1/1

Whether intelligence is a power distinct from intellect?

Aquin.: SMT FP Q[79] A[10] Obj. 1 Para. 1/1

OBJ 1: It would seem that the intelligence is another power than the
intellect. For we read in De Spiritu et Anima that "when we wish to rise
from lower to higher things, first the sense comes to our aid, then
imagination, then reason, then intellect, and afterwards intelligence."
But imagination and sense are distinct powers. Therefore also intellect
and intelligence are distinct.

Aquin.: SMT FP Q[79] A[10] Obj. 2 Para. 1/1

OBJ 2: Further, Boethius says (De Consol. v, 4) that "sense considers
man in one way, imagination in another, reason in another, intelligence
in another." But intellect is the same power as reason. Therefore,
seemingly, intelligence is a distinct power from intellect, as reason is
a distinct power from imagination or sense.

Aquin.: SMT FP Q[79] A[10] Obj. 3 Para. 1/1

OBJ 3: Further, "actions came before powers," as the Philosopher says
(De Anima ii, 4). But intelligence is an act separate from others
attributed to the intellect. For Damascene says (De Fide Orth. ii) that
"the first movement is called intelligence; but that intelligence which
is about a certain thing is called intention; that which remains and
conforms the soul to that which is understood is called invention, and
invention when it remains in the same man, examining and judging of
itself, is called phronesis [that is, wisdom], and phronesis if dilated
makes thought, that is, orderly internal speech; from which, they say,
comes speech expressed by the tongue." Therefore it seems that
intelligence is some special power.

Aquin.: SMT FP Q[79] A[10] OTC Para. 1/1

On the contrary, The Philosopher says (De Anima iii, 6) that
"intelligence is of indivisible things in which there is nothing false."
But the knowledge of these things belongs to the intellect. Therefore
intelligence is not another power than the intellect.

Aquin.: SMT FP Q[79] A[10] Body Para. 1/1

I answer that, This word "intelligence" properly signifies the
intellect's very act, which is to understand. However, in some works
translated from the Arabic, the separate substances which we call angels
are called "intelligences," and perhaps for this reason, that such
substances are always actually understanding. But in works translated
from the Greek, they are called "intellects" or "minds." Thus
intelligence is not distinct from intellect, as power is from power; but
as act is from power. And such a division is recognized even by the
philosophers. For sometimes they assign four intellects - namely, the
"active" and "passive" intellects, the intellect "in habit," and the
"actual" intellect. Of which four the active and passive intellects are
different powers; just as in all things the active power is distinct from
the passive. But three of these are distinct, as three states of the
passive intellect, which is sometimes in potentiality only, and thus it
is called passive; sometimes it is in the first act, which is knowledge,
and thus it is called intellect in habit; and sometimes it is in the
second act, which is to consider, and thus it is called intellect in act,
or actual intellect.

Aquin.: SMT FP Q[79] A[10] R.O. 1 Para. 1/1

Reply OBJ 1: If this authority is accepted, intelligence there means the
act of the intellect. And thus it is divided against intellect as act
against power.

Aquin.: SMT FP Q[79] A[10] R.O. 2 Para. 1/1

Reply OBJ 2: Boethius takes intelligence as meaning that act of the
intellect which transcends the act of the reason. Wherefore he also says
that reason alone belongs to the human race, as intelligence alone
belongs to God, for it belongs to God to understand all things without
any investigation.

Aquin.: SMT FP Q[79] A[10] R.O. 3 Para. 1/1

Reply OBJ 3: All those acts which Damascene enumerates belong to one
power - namely, the intellectual power. For this power first of all only
apprehends something; and this act is called "intelligence." Secondly, it
directs what it apprehends to the knowledge of something else, or to some
operation; and this is called "intention." And when it goes on in search
of what it "intends," it is called "invention." When, by reference to
something known for certain, it examines what it has found, it is said to
know or to be wise, which belongs to "phronesis" or "wisdom"; for "it
belongs to the wise man to judge," as the Philosopher says (Metaph. i,
2). And when once it has obtained something for certain, as being fully
examined, it thinks about the means of making it known to others; and
this is the ordering of "interior speech," from which proceeds "external
speech." For every difference of acts does not make the powers vary, but
only what cannot be reduced to the one same principle, as we have said
above (Q[78], A[4]).


Aquin.: SMT FP Q[79] A[11] Thes. Para. 1/1

Whether the speculative and practical intellects are distinct powers?

Aquin.: SMT FP Q[79] A[11] Obj. 1 Para. 1/1

OBJ 1: It would seem that the speculative and practical intellects are
distinct powers. For the apprehensive and motive are different kinds of
powers, as is clear from De Anima ii, 3. But the speculative intellect is
merely an apprehensive power; while the practical intellect is a motive
power. Therefore they are distinct powers.

Aquin.: SMT FP Q[79] A[11] Obj. 2 Para. 1/1

OBJ 2: Further, the different nature of the object differentiates the
power. But the object of the speculative intellect is "truth," and of the
practical is "good"; which differ in nature. Therefore the speculative
and practical intellect are distinct powers.

Aquin.: SMT FP Q[79] A[11] Obj. 3 Para. 1/1

OBJ 3: Further, in the intellectual part, the practical intellect is
compared to the speculative, as the estimative is to the imaginative
power in the sensitive part. But the estimative differs from the
imaginative, as power form power, as we have said above (Q[78], A[4]).
Therefore also the speculative intellect differs from the practical.

Aquin.: SMT FP Q[79] A[11] OTC Para. 1/1

On the contrary, The speculative intellect by extension becomes
practical (De Anima iii, 10). But one power is not changed into another.
Therefore the speculative and practical intellects are not distinct
powers.

Aquin.: SMT FP Q[79] A[11] Body Para. 1/1

I answer that, The speculative and practical intellects are not distinct
powers. The reason of which is that, as we have said above (Q[77], A[3]),
what is accidental to the nature of the object of a power, does not
differentiate that power; for it is accidental to a thing colored to be
man, or to be great or small; hence all such things are apprehended by
the same power of sight. Now, to a thing apprehended by the intellect, it
is accidental whether it be directed to operation or not, and according
to this the speculative and practical intellects differ. For it is the
speculative intellect which directs what it apprehends, not to operation, but to the consideration of truth; while the practical intellect is that
which directs what it apprehends to operation. And this is what the
Philosopher says (De Anima iii, 10); that "the speculative differs from
the practical in its end." Whence each is named from its end: the one
speculative, the other practical - i.e. operative.

Aquin.: SMT FP Q[79] A[11] R.O. 1 Para. 1/1

Reply OBJ 1: The practical intellect is a motive power, not as executing
movement, but as directing towards it; and this belongs to it according
to its mode of apprehension.

Aquin.: SMT FP Q[79] A[11] R.O. 2 Para. 1/1

Reply OBJ 2: Truth and good include one another; for truth is something
good, otherwise it would not be desirable; and good is something true,
otherwise it would not be intelligible. Therefore as the object of the
appetite may be something true, as having the aspect of good, for
example, when some one desires to know the truth; so the object of the
practical intellect is good directed to the operation, and under the
aspect of truth. For the practical intellect knows truth, just as the
speculative, but it directs the known truth to operation.

Aquin.: SMT FP Q[79] A[11] R.O. 3 Para. 1/1

Reply OBJ 3: Many differences differentiate the sensitive powers, which
do not differentiate the intellectual powers, as we have said above (A[7]
, ad 2; Q[77], A[3], ad 4).


Aquin.: SMT FP Q[79] A[12] Thes. Para. 1/1

Whether synderesis is a special power of the soul distinct from the
others?

Aquin.: SMT FP Q[79] A[12] Obj. 1 Para. 1/1

OBJ 1: It would seem that "synderesis" is a special power, distinct from
the others. For those things which fall under one division, seem to be of
the same genus. But in the gloss of Jerome on Ezech. 1:6, "synderesis" is
divided against the irascible, the concupiscible, and the rational, which
are powers. Therefore "synderesis" is a power.

Aquin.: SMT FP Q[79] A[12] Obj. 2 Para. 1/1

OBJ 2: Further, opposite things are of the same genus. But "synderesis"
and sensuality seem to be opposed to one another because "synderesis"
always incites to good; while sensuality always incites to evil: whence
it is signified by the serpent, as is clear from Augustine (De Trin. xii,
12,13). It seems, therefore, that 'synderesis' is a power just as
sensuality is.

Aquin.: SMT FP Q[79] A[12] Obj. 3 Para. 1/1

OBJ 3: Further, Augustine says (De Lib. Arb. ii, 10) that in the natural
power of judgment there are certain "rules and seeds of virtue, both true
and unchangeable." And this is what we call synderesis. Since, therefore,
the unchangeable rules which guide our judgment belong to the reason as
to its higher part, as Augustine says (De Trin. xii, 2), it seems that
"synderesis" is the same as reason: and thus it is a power.

Aquin.: SMT FP Q[79] A[12] OTC Para. 1/1

On the contrary, According to the Philosopher (Metaph. viii, 2),
"rational powers regard opposite things." But "synderesis" does not
regard opposites, but inclines to good only. Therefore "synderesis" is
not a power. For if it were a power it would be a rational power, since
it is not found in brute animals.

Aquin.: SMT FP Q[79] A[12] Body Para. 1/1

I answer that, "Synderesis" is not a power but a habit; though some held
that it is a power higher than reason; while others [*Cf. Alexander of
Hales, Sum. Theol. II, Q[73]] said that it is reason itself, not as
reason, but as a nature. In order to make this clear we must observe
that, as we have said above (A[8]), man's act of reasoning, since it is a
kind of movement, proceeds from the understanding of certain
things - namely, those which are naturally known without any
investigation on the part of reason, as from an immovable principle - and ends also at the understanding, inasmuch as by means of those principles
naturally known, we judge of those things which we have discovered by
reasoning. Now it is clear that, as the speculative reason argues about
speculative things, so that practical reason argues about practical
things. Therefore we must have, bestowed on us by nature, not only
speculative principles, but also practical principles. Now the first
speculative principles bestowed on us by nature do not belong to a special power, but to a special habit, which is called "the understanding
of principles," as the Philosopher explains (Ethic. vi, 6). Wherefore the
first practical principles, bestowed on us by nature, do not belong to a
special power, but to a special natural habit, which we call
"synderesis." Whence "synderesis" is said to incite to good, and to
murmur at evil, inasmuch as through first principles we proceed to
discover, and judge of what we have discovered. It is therefore clear
that "synderesis" is not a power, but a natural habit.

Aquin.: SMT FP Q[79] A[12] R.O. 1 Para. 1/1

Reply OBJ 1: The division given by Jerome is taken from the variety of
acts, and not from the variety of powers; and various acts can belong to
one power.

Aquin.: SMT FP Q[79] A[12] R.O. 2 Para. 1/1

Reply OBJ 2: In like manner, the opposition of sensuality to "syneresis"
is an opposition of acts, and not of the different species of one genus.

Aquin.: SMT FP Q[79] A[12] R.O. 3 Para. 1/1

Reply OBJ 3: Those unchangeable notions are the first practical
principles, concerning which no one errs; and they are attributed to
reason as to a power, and to "synderesis" as to a habit. Wherefore we
judge naturally both by our reason and by "synderesis."



Aquin.: SMT FP Q[79] A[13] Thes. Para. 1/1

Whether conscience be a power?

Aquin.: SMT FP Q[79] A[13] Obj. 1 Para. 1/1

OBJ 1: It would seem that conscience is a power; for Origen says
[*Commentary on Rm. 2:15] that "conscience is a correcting and guiding
spirit accompanying the soul, by which it is led away from evil and made
to cling to good." But in the soul, spirit designates a power - either
the mind itself, according to the text (Eph. 4:13), "Be ye renewed in the
spirit of your mind" - or the imagination, whence imaginary vision is
called spiritual, as Augustine says (Gen. ad lit. xii, 7,24). Therefore
conscience is a power.

Aquin.: SMT FP Q[79] A[13] Obj. 2 Para. 1/1

OBJ 2: Further, nothing is a subject of sin, except a power of the soul.
But conscience is a subject of sin; for it is said of some that "their
mind and conscience are defiled" (Titus 1:15). Therefore it seems that
conscience is a power.

Aquin.: SMT FP Q[79] A[13] Obj. 3 Para. 1/1

OBJ 3: Further, conscience must of necessity be either an act, a habit,
or a power. But it is not an act; for thus it would not always exist in
man. Nor is it a habit; for conscience is not one thing but many, since
we are directed in our actions by many habits of knowledge. Therefore
conscience is a power.

Aquin.: SMT FP Q[79] A[13] OTC Para. 1/1

On the contrary, Conscience can be laid aside. But a power cannot be
laid aside. Therefore conscience is not a power.

Aquin.: SMT FP Q[79] A[13] Body Para. 1/2
I answer that, Properly speaking, conscience is not a power, but an act.
This is evident both from the very name and from those things which in
the common way of speaking are attributed to conscience. For conscience,
according to the very nature of the word, implies the relation of
knowledge to something: for conscience may be resolved into "cum alio
scientia," i.e. knowledge applied to an individual case. But the
application of knowledge to something is done by some act. Wherefore from
this explanation of the name it is clear that conscience is an act.

Aquin.: SMT FP Q[79] A[13] Body Para. 2/2

The same is manifest from those things which are attributed to
conscience. For conscience is said to witness, to bind, or incite, and
also to accuse, torment, or rebuke. And all these follow the application
of knowledge or science to what we do: which application is made in three
ways. One way in so far as we recognize that we have done or not done
something; "Thy conscience knoweth that thou hast often spoken evil of
others" (Eccles. 7:23), and according to this, conscience is said to
witness. In another way, so far as through the conscience we judge that
something should be done or not done; and in this sense, conscience is
said to incite or to bind. In the third way, so far as by conscience we
judge that something done is well done or ill done, and in this sense
conscience is said to excuse, accuse, or torment. Now, it is clear that
all these things follow the actual application of knowledge to what we
do. Wherefore, properly speaking, conscience denominates an act. But
since habit is a principle of act, sometimes the name conscience is given
to the first natural habit - namely, 'synderesis': thus Jerome calls
'synderesis' conscience (Gloss. Ezech. 1:6); Basil [*Hom. in princ.
Proverb.], the "natural power of judgment," and Damascene [*De Fide Orth.
iv. 22] says that it is the "law of our intellect." For it is customary
for causes and effects to be called after one another.

Aquin.: SMT FP Q[79] A[13] R.O. 1 Para. 1/1

Reply OBJ 1: Conscience is called a spirit, so far as spirit is the same
as mind; because conscience is a certain pronouncement of the mind.

Aquin.: SMT FP Q[79] A[13] R.O. 2 Para. 1/1

Reply OBJ 2: The conscience is said to be defiled, not as a subject, but
as the thing known is in knowledge; so far as someone knows he is defiled.

Aquin.: SMT FP Q[79] A[13] R.O. 3 Para. 1/1

Reply OBJ 3: Although an act does not always remain in itself, yet it
always remains in its cause, which is power and habit. Now all the habits
by which conscience is formed, although many, nevertheless have their
efficacy from one first habit, the habit of first principles, which is
called "synderesis." And for this special reason, this habit is sometimes
called conscience, as we have said above.





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