Summa Theologica

We must now consider Intention: concerning which there are five points of inquiry:

(1) Whether intention is an act of intellect or of the will?

(2) Whether it is only of the last end?

(3) Whether one can intend two things at the same time?

(4) Whether intention of the end is the same act as volition of the means?

(5) Whether intention is within the competency of irrational animals?

Objection 1: It would seem that intention is an act of the intellect, and not of the will. For it is written (Mat. 6:22): "If thy eye be single, thy whole body shall be lightsome": where, according to Augustine (De Serm. Dom. in Monte ii, 13) the eye signifies intention. But since the eye is the organ of sight, it signifies the apprehensive power. Therefore intention is not an act of the appetitive but of the apprehensive power.

Objection 2: Further, Augustine says (De Serm. Dom. in Monte ii, 13) that Our Lord spoke of intention as a light, when He said (Mat. 6:23): "If the light that is in thee be darkness," etc. But light pertains to knowledge. Therefore intention does too.

Objection 3: Further, intention implies a kind of ordaining to an end. But to ordain is an act of reason. Therefore intention belongs not to the will but to the reason.

Objection 4: Further, an act of the will is either of the end or of the means. But the act of the will in respect of the end is called volition, or enjoyment; with regard to the means, it is choice, from which intention is distinct. Therefore it is not an act of the will.

On the contrary, Augustine says (De Trin. xi, 4,8,9) that "the intention of the will unites the sight to the object seen; and the images retained in the memory, to the penetrating gaze of the soul's inner thought." Therefore intention is an act of the will.

I answer that, Intention, as the very word denotes, signifies, "to tend to something." Now both the action of the mover and the movement of thing moved, tend to something. But that the movement of the thing moved tends to anything, is due to the action of the mover. Consequently intention belongs first and principally to that which moves to the end: hence we say that an architect or anyone who is in authority, by his command moves others to that which he intends. Now the will moves all the other powers of the soul to the end, as shown above (Q[9], A[1]). Wherefore it is evident that intention, properly speaking, is an act of the will.

Reply to Objection 1: The eye designates intention figuratively, not because intention has reference to knowledge, but because it presupposes knowledge, which proposes to the will the end to which the latter moves; thus we foresee with the eye whither we should tend with our bodies.

Reply to Objection 2: Intention is called a light because it is manifest to him who intends. Wherefore works are called darkness because a man knows what he intends, but knows not what the result may be, as Augustine expounds (De Serm. Dom. in Monte ii, 13).

Reply to Objection 3: The will does not ordain, but tends to something according to the order of reason. Consequently this word "intention" indicates an act of the will, presupposing the act whereby the reason orders something to the end.

Reply to Objection 4: Intention is an act of the will in regard to the end. Now the will stands in a threefold relation to the end. First, absolutely; and thus we have "volition," whereby we will absolutely to have health, and so forth. Secondly, it considers the end, as its place of rest; and thus "enjoyment" regards the end. Thirdly, it considers the end as the term towards which something is ordained; and thus "intention" regards the end. For when we speak of intending to have health, we mean not only that we have it, but that we will have it by means of something else.

Objection 1: It would seem that intention is only of the last end. For it is said in the book of Prosper's Sentences (Sent. 100): "The intention of the heart is a cry to God." But God is the last end of the human heart. Therefore intention is always regards the last end.

Objection 2: Further, intention regards the end as the terminus, as stated above (A[1], ad 4). But a terminus is something last. Therefore intention always regards the last end.

Objection 3: Further, just as intention regards the end, so does enjoyment. But enjoyment is always of the last end. Therefore intention is too.

On the contrary, There is but one last end of human wills, viz. Happiness, as stated above (Q[1], A[7]). If, therefore, intentions were only of the last end, men would not have different intentions: which is evidently false.

I answer that, As stated above (A[1], ad 4), intention regards the end as a terminus of the movement of the will. Now a terminus of movement may be taken in two ways. First, the very last terminus, when the movement comes to a stop; this is the terminus of the whole movement. Secondly, some point midway, which is the beginning of one part of the movement, and the end or terminus of the other. Thus in the movement from A to C through B, C is the last terminus, while B is a terminus, but not the last. And intention can be both. Consequently though intention is always of the end, it need not be always of the last end.

Reply to Objection 1: The intention of the heart is called a cry to God, not that God is always the object of intention, but because He sees our intention. Or because, when we pray, we direct our intention to God, which intention has the force of a cry.

Reply to Objection 2: A terminus is something last, not always in respect of the whole, but sometimes in respect of a part.

Reply to Objection 3: Enjoyment implies rest in the end; and this belongs to the last end alone. But intention implies movement towards an end, not rest. Wherefore the comparison proves nothing.

Objection 1: It would seem that one cannot intend several things at the same time. For Augustine says (De Serm. Dom. in Monte ii, 14,16,17) that man's intention cannot be directed at the same time to God and to bodily benefits. Therefore, for the same reason, neither to any other two things.

Objection 2: Further, intention designates a movement of the will towards a terminus. Now there cannot be several termini in the same direction of one movement. Therefore the will cannot intend several things at the same time.

Objection 3: Further, intention presupposes an act of reason or of the intellect. But "it is not possible to understand several things at the same time," according to the Philosopher (Topic. ii, 10). Therefore neither is it possible to intend several things at the same time.

On the contrary, Art imitates nature. Now nature intends two purposes by means of one instrument: thus "the tongue is for the purpose of taste and speech" (De Anima ii, 8). Therefore, for the same reason, art or reason can at the same time direct one thing to two ends: so that one can intend several ends at the same time.

I answer that, The expression "two things" may be taken in two ways: they may be ordained to one another or not so ordained. And if they be ordained to one another, it is evident, from what has been said, that a man can intend several things at the same time. For intention is not only of the last end, as stated above(A[2]), but also of an intermediary end. Now a man intends at the same time, both the proximate and the last end; as the mixing of a medicine and the giving of health.

But if we take two things that are not ordained to one another, thus also a man can intend several things at the same time. This is evident from the fact that a man prefers one thing to another because it is the better of the two. Now one of the reasons for which one thing is better than another is that it is available for more purposes: wherefore one thing can be chosen in preference to another, because of the greater number of purposes for which it is available: so that evidently a man can intend several things at the same time.

Reply to Objection 1: Augustine means to say that man cannot at the same time direct his attention to God and to bodily benefits, as to two last ends: since, as stated above (Q[1], A[5]), one man cannot have several last ends.

Reply to Objection 2: There can be several termini ordained to one another, of the same movement and in the same direction; but not unless they be ordained to one another. At the same time it must be observed that what is not one in reality may be taken as one by the reason. Now intention is a movement of the will to something already ordained by the reason, as stated above (A[1], ad 3). Wherefore where we have many things in reality, we may take them as one term of intention, in so far as the reason takes them as one: either because two things concur in the integrity of one whole, as a proper measure of heat and cold conduce to health; or because two things are included in one which may be intended. For instance, the acquiring of wine and clothing is included in wealth, as in something common to both; wherefore nothing hinders the man who intends to acquire wealth, from intending both the others.

Reply to Objection 3: As stated in the FP, Q[12], A[10]; FP, Q[58], A[2]; FP, Q[85], A[4] it is possible to understand several things at the same time, in so far as, in some way, they are one.

Objection 1: It would seem that the intention of the end and the volition of the means are not one and the same movement. For Augustine says (De Trin. xi, 6) that "the will to see the window, has for its end the seeing of the window; and is another act from the will to see, through the window, the passersby." But that I should will to see the passersby, through the window, belongs to intention; whereas that I will to see the window, belongs to the volition of the means. Therefore intention of the end and the willing of the means are distinct movements of the will.

Objection 2: Further, acts are distinct according to their objects. But the end and the means are distinct objects. Therefore the intention of the end and the willing of the means are distinct movements of the will.

Objection 3: Further, the willing of the means is called choice. But choice and intention are not the same. Therefore intention of the end and the willing of the means are not the same movement of the will.

On the contrary, The means in relation to the end, are as the mid-space to the terminus. Now it is all the same movement that passes through the mid-space to the terminus, in natural things. Therefore in things pertaining to the will, the intention of the end is the same movement as the willing of the means.

I answer that, The movement of the will to the end and to the means can be considered in two ways. First, according as the will is moved to each of the aforesaid absolutely and in itself. And thus there are really two movements of the will to them. Secondly, it may be considered accordingly as the will is moved to the means for the sake of the end: and thus the movement of the will to the end and its movement to the means are one and the same thing. For when I say: "I wish to take medicine for the sake of health," I signify no more than one movement of my will. And this is because the end is the reason for willing the means. Now the object, and that by reason of which it is an object, come under the same act; thus it is the same act of sight that perceives color and light, as stated above (Q[8], A[3], ad 2). And the same applies to the intellect; for if it consider principle and conclusion absolutely, it considers each by a distinct act; but when it assents to the conclusion on account of the principles, there is but one act of the intellect.

Reply to Objection 1: Augustine is speaking of seeing the window and of seeing, through the window, the passersby, according as the will is moved to either absolutely.

Reply to Objection 2: The end, considered as a thing, and the means to that end, are distinct objects of the will. But in so far as the end is the formal object in willing the means, they are one and the same object.

Reply to Objection 3: A movement which is one as to the subject, may differ, according to our way of looking at it, as to its beginning and end, as in the case of ascent and descent (Phys. iii, 3). Accordingly, in so far as the movement of the will is to the means, as ordained to the end, it is called "choice": but the movement of the will to the end as acquired by the means, it is called "intention." A sign of this is that we can have intention of the end without having determined the means which are the object of choice.

Objection 1: It would seem that irrational animals intend the end. For in things void of reason nature stands further apart from the rational nature, than does the sensitive nature in irrational animals. But nature intends the end even in things void of reason, as is proved in Phys. ii, 8. Much more, therefore, do irrational animals intend the end.

Objection 2: Further, just as intention is of the end, so is enjoyment. But enjoyment is in irrational animals, as stated above (Q[11], A[2]). Therefore intention is too.

Objection 3: Further, to intend an end belongs to one who acts for an end; since to intend is nothing else than to tend to something. But irrational animals act for an end; for an animal is moved either to seek food, or to do something of the kind. Therefore irrational animals intend an end.

On the contrary, Intention of an end implies ordaining something to an end: which belongs to reason. Since therefore irrational animals are void of reason, it seems that they do not intend an end.

I answer that, As stated above(A[1]), to intend is to tend to something; and this belongs to the mover and to the moved. According, therefore, as that which is moved to an end by another is said to intend the end, thus nature is said to intend an end, as being moved to its end by God, as the arrow is moved by the archer. And in this way, irrational animals intend an end, inasmuch as they are moved to something by natural instinct. The other way of intending an end belongs to the mover; according as he ordains the movement of something, either his own or another's, to an end. This belongs to reason alone. Wherefore irrational animals do not intend an end in this way, which is to intend properly and principally, as stated above

Reply to Objection 1: This argument takes intention in the sense of being moved to an end.

Reply to Objection 2: Enjoyment does not imply the ordaining of one thing to another, as intention does, but absolute repose in the end.

Reply to Objection 3: Irrational animals are moved to an end, not as though they thought that they can gain the end by this movement; this belongs to one that intends; but through desiring the end by natural instinct, they are moved to an end, moved, as it were, by another, like other things that are moved naturally.

OF CHOICE, WHICH IS AN ACT OF THE WILL WITH REGARD TO THE MEANS (SIX ARTICLES)

We must now consider the acts of the will with regard to the means. There are three of them: to choose, to consent, and to use. And choice is preceded by counsel. First of all, then, we must consider choice: secondly, counsel; thirdly, consent; fourthly, use.

Concerning choice there are six points of inquiry:

(1) Of what power is it the act; of the will or of the reason?

(2) Whether choice is to be found in irrational animals?

(3) Whether choice is only the means, or sometimes also of the end?

(4) Whether choice is only of things that we do ourselves?

(5) Whether choice is only of possible things?

(6) Whether man chooses of necessity or freely?

Objection 1: It would seem that choice is an act, not of will but of reason. For choice implies comparison, whereby one is given preference to another. But to compare is an act of reason. Therefore choice is an act of reason.

Objection 2: Further, it is for the same faculty to form a syllogism, and to draw the conclusion. But, in practical matters, it is the reason that forms syllogisms. Since therefore choice is a kind of conclusion in practical matters, as stated in Ethic. vii, 3, it seems that it is an act of reason.

Objection 3: Further, ignorance does not belong to the will but to the cognitive power. Now there is an "ignorance of choice," as is stated in Ethic. iii, 1. Therefore it seems that choice does not belong to the will but to the reason.

On the contrary, The Philosopher says (Ethic. iii, 3) that choice is "the desire of things in our power." But desire is an act of will. Therefore choice is too.

I answer that, The word choice implies something belonging to the reason or intellect, and something belonging to the will: for the Philosopher says (Ethic. vi, 2) that choice is either "intellect influenced by appetite or appetite influenced by intellect." Now whenever two things concur to make one, one of them is formal in regard to the other. Hence Gregory of Nyssa [*Nemesius, De Nat. Hom. xxxiii.] says that choice "is neither desire only, nor counsel only, but a combination of the two. For just as we say that an animal is composed of soul and body, and that it is neither a mere body, nor a mere soul, but both; so is it with choice."

Now we must observe, as regards the acts of the soul, that an act belonging essentially to some power or habit, receives a form or species from a higher power or habit, according as an inferior is ordained by a superior: for if a man were to perform an act of fortitude for the love of God, that act is materially an act of fortitude, but formally, an act of charity. Now it is evident that, in a sense, reason precedes the will and ordains its act: in so far as the will tends to its object, according to the order of reason, since the apprehensive power presents the object to the appetite. Accordingly, that act whereby the will tends to something proposed to it as being good, through being ordained to the end by the reason, is materially an act of the will, but formally an act of the reason. Now in such like matters the substance of the act is as the matter in comparison to the order imposed by the higher power. Wherefore choice is substantially not an act of the reason but of the will: for choice is accomplished in a certain movement of the soul towards the good which is chosen. Consequently it is evidently an act of the appetitive power.

Reply to Objection 1: Choice implies a previous comparison; not that it consists in the comparison itself.

Reply to Objection 2: It is quite true that it is for the reason to draw the conclusion of a practical syllogism; and it is called "a decision" or "judgment," to be followed by "choice." And for this reason the conclusion seems to belong to the act of choice, as to that which results from it.

Reply to Objection 3: In speaking "of ignorance of choice," we do not mean that choice is a sort of knowledge, but that there is ignorance of what ought to be chosen.

Objection 1: It would seem that irrational animals are able to choose. For choice "is the desire of certain things on account of an end," as stated in Ethic. iii, 2,3. But irrational animals desire something on account of an end: since they act for an end, and from desire. Therefore choice is in irrational animals.

Objection 2: Further, the very word "electio" [choice] seems to signify the taking of something in preference to others. But irrational animals take something in preference to others: thus we can easily see for ourselves that a sheep will eat one grass and refuse another. Therefore choice is in irrational animals.

Objection 3: Further, according to Ethic. vi, 12, "it is from prudence that a man makes a good choice of means." But prudence is found in irrational animals: hence it is said in the beginning of Metaph. i, 1 that "those animals which, like bees, cannot hear sounds, are prudent by instinct." We see this plainly, in wonderful cases of sagacity manifested in the works of various animals, such as bees, spiders, and dogs. For a hound in following a stag, on coming to a crossroad, tries by scent whether the stag has passed by the first or the second road: and if he find that the stag has not passed there, being thus assured, takes to the third road without trying the scent; as though he were reasoning by way of exclusion, arguing that the stag must have passed by this way, since he did not pass by the others, and there is no other road. Therefore it seems that irrational animals are able to choose.

On the contrary, Gregory of Nyssa [*Nemesius, De Nat. Hom. xxxiii.] says that "children and irrational animals act willingly but not from choice." Therefore choice is not in irrational animals.

I answer that, Since choice is the taking of one thing in preference to another it must of necessity be in respect of several things that can be chosen. Consequently in those things which are altogether determinate to one there is no place for choice. Now the difference between the sensitive appetite and the will is that, as stated above (Q[1], A[2], ad 3), the sensitive appetite is determinate to one particular thing, according to the order of nature; whereas the will, although determinate to one thing in general, viz. the good, according to the order of nature, is nevertheless indeterminate in respect of particular goods. Consequently choice belongs properly to the will, and not to the sensitive appetite which is all that irrational animals have. Wherefore irrational animals are not competent to choose.

Reply to Objection 1: Not every desire of one thing on account of an end is called choice: there must be a certain discrimination of one thing from another. And this cannot be except when the appetite can be moved to several things.

Reply to Objection 2: An irrational animal takes one thing in preference to another, because its appetite is naturally determinate to that thing. Wherefore as soon as an animal, whether by its sense or by its imagination, is offered something to which its appetite is naturally inclined, it is moved to that alone, without making any choice. Just as fire is moved upwards and not downwards, without its making any choice.

Reply to Objection 3: As stated in Phys. iii, 3 "movement is the act of the movable, caused by a mover." Wherefore the power of the mover appears in the movement of that which it moves. Accordingly, in all things moved by reason, the order of reason which moves them is evident, although the things themselves are without reason: for an arrow through the motion of the archer goes straight towards the target, as though it were endowed with reason to direct its course. The same may be seen in the movements of clocks and all engines put together by the art of man. Now as artificial things are in comparison to human art, so are all natural things in comparison to the Divine art. And accordingly order is to be seen in things moved by nature, just as in things moved by reason, as is stated in Phys. ii. And thus it is that in the works of irrational animals we notice certain marks of sagacity, in so far as they have a natural inclination to set about their actions in a most orderly manner through being ordained by the Supreme art. For which reason, too, certain animals are called prudent or sagacious; and not because they reason or exercise any choice about things. This is clear from the fact that all that share in one nature, invariably act in the same way.

Objection 1: It would seem that choice is not only of the means. For the Philosopher says (Ethic. vi, 12) that "virtue makes us choose aright; but it is not the part of virtue, but of some other power to direct aright those things which are to be done for its sake." But that for the sake of which something is done is the end. Therefore choice is of the end.

Objection 2: Further, choice implies preference of one thing to another. But just as there can be preference of means, so can there be preference of ends. Therefore choice can be of ends, just as it can be of means.

On the contrary, The Philosopher says (Ethic. iii, 2) that "volition is of the end, but choice of the means."

I answer that, As already stated (A[1], ad 2), choice results from the decision or judgment which is, as it were, the conclusion of a practical syllogism. Hence that which is the conclusion of a practical syllogism, is the matter of choice. Now in practical things the end stands in the position of a principle, not of a conclusion, as the Philosopher says (Phys. ii, 9). Wherefore the end, as such, is not a matter of choice.

But just as in speculative knowledge nothing hinders the principle of one demonstration or of one science, from being the conclusion of another demonstration or science; while the first indemonstrable principle cannot be the conclusion of any demonstration or science; so too that which is the end in one operation, may be ordained to something as an end. And in this way it is a matter of choice. Thus in the work of a physician health is the end: wherefore it is not a matter of choice for a physician, but a matter of principle. Now the health of the body is ordained to the good of the soul, consequently with one who has charge of the soul's health, health or sickness may be a matter of choice; for the Apostle says (2 Cor. 12:10): "For when I am weak, then am I powerful." But the last end is nowise a matter of choice.

Reply to Objection 1: The proper ends of virtues are ordained to Happiness as to their last end. And thus it is that they can be a matter of choice.

Reply to Objection 2: As stated above (Q[1], A[5]), there is but one last end. Accordingly wherever there are several ends, they can be the subject of choice, in so far as they are ordained to a further end.

Objection 1: It would seem that choice is not only in respect of human acts. For choice regards the means. Now, not only acts, but also the organs, are means (Phys. ii, 3). Therefore choice is not only concerned with human acts.

Objection 2: Further, action is distinct from contemplation. But choice has a place even in contemplation; in so far as one opinion is preferred to another. Therefore choice is not concerned with human acts alone.

Objection 3: Further, men are chosen for certain posts, whether secular or ecclesiastical, by those who exercise no action in their regard. Therefore choice is not concerned with human acts alone.

On the contrary, The Philosopher says (Ethic. iii, 2) that "no man chooses save what he can do himself."

I answer that, Just as intention regards the end, so does choice regard the means. Now the end is either an action or a thing. And when the end is a thing, some human action must intervene; either in so far as man produces the thing which is the end, as the physician produces health (wherefore the production of health is said to be the end of the physician); or in so far as man, in some fashion, uses or enjoys the thing which is the end; thus for the miser, money or the possession of money is the end. The same is to be said of the means. For the means must needs be either an action; or a thing, with some action intervening whereby man either makes the thing which is the means, or puts it to some use. And thus it is that choice is always in regard to human acts.

Reply to Objection 1: The organs are ordained to the end, inasmuch as man makes use of them for the sake of the end.

Reply to Objection 2: In contemplation itself there is the act of the intellect assenting to this or that opinion. It is exterior action that is put in contradistinction to contemplation.

Reply to Objection 3: When a man chooses someone for a bishopric or some high position in the state, he chooses to name that man to that post. Else, if he had no right to act in the appointment of the bishop or official, he would have no right to choose. Likewise, whenever we speak of one thing being chosen in preference to another, it is in conjunction with some action of the chooser.

Objection 1: It would seem that choice in not only of possible things. For choice is an act of the will, as stated above(A[1]). Now there is "a willing of impossibilities" (Ethic. iii, 2). Therefore there is also a choice of impossibilities.

Objection 2: Further, choice is of things done by us, as stated above(A[4]). Therefore it matters not, as far as the act of choosing is concerned, whether one choose that which is impossible in itself, or that which is impossible to the chooser. Now it often happens that we are unable to accomplish what we choose: so that this proves to be impossible to us. Therefore choice is of the impossible.

Objection 3: Further, to try to do a thing is to choose to do it. But the Blessed Benedict says (Regula lxviii) that if the superior command what is impossible, it should be attempted. Therefore choice can be of the impossible.

On the contrary, The Philosopher says (Ethic. iii, 2) that "there is no choice of impossibilities."

I answer that, As stated above(A[4]), our choice is always concerned with our actions. Now whatever is done by us, is possible to us. Therefore we must needs say that choice is only of possible things.

Moreover, the reason for choosing a thing is that it conduces to an end. But what is impossible cannot conduce to an end. A sign of this is that when men in taking counsel together come to something that is impossible to them, they depart, as being unable to proceed with the business.

Again, this is evident if we examine the previous process of the reason. For the means, which are the object of choice, are to the end, as the conclusion is to the principle. Now it is clear that an impossible conclusion does not follow from a possible principle. Wherefore an end cannot be possible, unless the means be possible. Now no one is moved to the impossible. Consequently no one would tend to the end, save for the fact that the means appear to be possible. Therefore the impossible is not the object of choice.

Reply to Objection 1: The will stands between the intellect and the external action: for the intellect proposes to the will its object, and the will causes the external action. Hence the principle of the movement in the will is to be found in the intellect, which apprehends something under the universal notion of good: but the term or perfection of the will's act is to be observed in its relation to the action whereby a man tends to the attainment of a thing; for the movement of the will is from the soul to the thing. Consequently the perfect act of the will is in respect of something that is good for one to do. Now this cannot be something impossible. Wherefore the complete act of the will is only in respect of what is possible and good for him that wills. But the incomplete act of the will is in respect of the impossible; and by some is called "velleity," because, to wit, one would will [vellet] such a thing, were it possible. But choice is an act of the will, fixed on something to be done by the chooser. And therefore it is by no means of anything but what is possible.

Reply to Objection 2: Since the object of the will is the apprehended good, we must judge of the object of the will according as it is apprehended. And so, just as sometimes the will tends to something which is apprehended as good, and yet is not really good; so is choice sometimes made of something apprehended as possible to the chooser, and yet impossible to him.

Reply to Objection 3: The reason for this is that the subject should not rely on his own judgment to decide whether a certain thing is possible; but in each case should stand by his superior's judgment.