Summa Th. II-II EN Qu.24 a.9
Objection: 1. It would seem unfitting to distinguish three degrees of charity, beginning, progress, and perfection. For there are many degrees between the beginning of charity and its ultimate perfection. Therefore it is not right to put only one.
2. Further, charity begins to progress as soon as it begins to be. Therefore we ought not to distinguish between charity as progressing and as beginning.
3. Further, in this world, however perfect a man's charity may be, it can increase, as stated above (Article ). Now for charity to increase is to progress. Therefore perfect charity ought not to be distinguished from progressing charity: and so the aforesaid degrees are unsuitably assigned to charity.
On the contrary Augustine says (In prim. canon. Joan. Tract. v) "As soon as charity is born it takes food," which refers to beginners, "after taking food, it waxes strong," which refers to those who are progressing, "and when it has become strong it is perfected," which refers to the perfect. Therefore there are three degrees of charity.
I answer that The spiritual increase of charity may be considered in respect of a certain likeness to the growth of the human body. For although this latter growth may be divided into many parts, yet it has certain fixed divisions according to those particular actions or pursuits to which man is brought by this same growth. Thus we speak of a man being an infant until he has the use of reason, after which we distinguish another state of man wherein he begins to speak and to use his reason, while there is again a third state, that of puberty when he begins to acquire the power of generation, and so on until he arrives at perfection.In like manner the divers degrees of charity are distinguished according to the different pursuits to which man is brought by the increase of charity. For at first it is incumbent on man to occupy himself chiefly with avoiding sin and resisting his concupiscences, which move him in opposition to charity: this concerns beginners, in whom charity has to be fed or fostered lest it be destroyed: in the second place man's chief pursuit is to aim at progress in good, and this is the pursuit of the proficient, whose chief aim is to strengthen their charity by adding to it: while man's third pursuit is to aim chiefly at union with and enjoyment of God: this belongs to the perfect who "desire to be dissolved and to be with Christ."In like manner we observe in local motion that at first there is withdrawal from one term, then approach to the other term, and thirdly, rest in this term.
Reply to Objection: 1. All these distinct degrees which can be discerned in the increase of charity, are comprised in the aforesaid three, even as every division of continuous things is included in these three---the beginning, the middle, and the end, as the Philosopher states (De Coelo i, 1).
2. Although those who are beginners in charity may progress, yet the chief care that besets them is to resist the sins which disturb them by their onslaught. Afterwards, however, when they come to feel this onslaught less, they begin to tend to perfection with greater security; yet with one hand doing the work, and with the other holding the sword as related in 2 Esdr 4:17 about those who built up Jerusalem.
3. Even the perfect make progress in charity: yet this is not their chief care, but their aim is principally directed towards union with God. And though both the beginner and the proficient seek this, yet their solicitude is chiefly about other things, with the beginner, about avoiding sin, with the proficient, about progressing in virtue.
Objection: 1. It would seem that charity can decrease. For contraries by their nature affect the same subject. Now increase and decrease are contraries. Since then charity increases, as stated above (Article ), it seems that it can also decrease.
2. Further, Augustine, speaking to God, says (Confess. x) "He loves Thee less, who loves aught besides Thee": and (Qq. lxxxiii, qu. 36) he says that "what kindles charity quenches cupidity." For this it seems to follow that, on the contrary, what arouses cupidity quenches charity. But cupidity, whereby a man loves something besides God, can increase in man. Therefore charity can decrease.
3. Further, as Augustine says (Gn ad lit. viii, 12) "God makes the just man, by justifying him, but in such a way, that if the man turns away from God, he no longer retains the effect of the Divine operation." From this we may gather that when God preserves charity in man, He works in the same way as when He first infuses charity into him. Now at the first infusion of charity God infuses less charity into him that prepares himself less. Therefore also in preserving charity, He preserves less charity in him that prepares himself less. Therefore charity can decrease.
On the contrary In Scripture, charity is compared to fire, according to Cant 8:6: "The lamps thereof," i.e. of charity, "are fire and flames." Now fire ever mounts upward so long as it lasts. Therefore as long as charity endures, it can ascend, but cannot descend, i.e. decrease.
I answer that The quantity which charity has in comparison with its proper object, cannot decrease, even as neither can it increase, as stated above (Article , ad 2).Since, however, it increases in that quantity which it has in comparison with its subject, here is the place to consider whether it can decrease in this way. Now, if it decrease, this must needs be either through an act, or by the mere cessation from act. It is true that virtues acquired through acts decrease and sometimes cease altogether through cessation from act, as stated above (FS, Question , Article ). Wherefore the Philosopher says, in reference to friendship (Ethic. viii, 5) "that want of intercourse," i.e. the neglect to call upon or speak with one's friends, "has destroyed many a friendship." Now this is because the safe-keeping of a thing depends on its cause, and the cause of human virtue is a human act, so that when human acts cease, the virtue acquired thereby decreases and at last ceases altogether. Yet this does not occur to charity, because it is not the result of human acts, but is caused by God alone, as stated above (Article ). Hence it follows that even when its act ceases, it does not for this reason decrease, or cease altogether, unless the cessation involves a sin.The consequence is that a decrease of charity cannot be caused except either by God or by some sinful act. Now no defect is caused in us by God, except by way of punishment, in so far as He withdraws His grace in punishment of sin. Hence He does not diminish charity except by way of punishment: and this punishment is due on account of sin.It follows, therefore, that if charity decrease, the cause of this decrease must be sin either effectively or by way of merit. But mortal sin does not diminish charity, in either of these ways, but destroys it entirely, both effectively, because every mortal sin is contrary to charity, as we shall state further on (Article ), and by way of merit, since when, by sinning mortally, a man acts against charity, he deserves that God should withdraw charity from him.In like manner, neither can venial sin diminish charity either effectively or by way of merit. Not effectively, because it does not touch charity, since charity is about the last end, whereas venial sin is a disorder about things directed to the end: and a man's love for the end is none the less through his committing an inordinate act as regards the things directed to the end. Thus sick people sometimes, though they love health much, are irregular in keeping to their diet: and thus again, in speculative sciences, the false opinions that are derived from the principles, do not diminish the certitude of the principles. So too, venial sin does not merit diminution of charity; for when a man offends in a small matter he does not deserve to be mulcted in a great matter. For God does not turn away from man, more than man turns away from Him: wherefore he that is out of order in respect of things directed to the end, does not deserve to be mulcted in charity whereby he is ordered to the last end.The consequence is that charity can by no means be diminished, if we speak of direct causality, yet whatever disposes to its corruption may be said to conduce indirectly to its diminution, and such are venial sins, or even the cessation from the practice of works of charity.
Reply to Objection: 1. Contraries affect the same subject when that subject stands in equal relation to both. But charity does not stand in equal relation to increase and decrease. For it can have a cause of increase, but not of decrease, as stated above. Hence the argument does not prove.
2. Cupidity is twofold, one whereby man places his end in creatures, and this kills charity altogether, since it is its poison, as Augustine states (Confess. x). This makes us love God less (i.e. less than we ought to love Him by charity), not indeed by diminishing charity but by destroying it altogether. It is thus that we must understand the saying: "He loves Thee less, who loves aught beside Thee," for he adds these words, "which he loveth not for Thee." This does not apply to venial sin, but only to mortal sin: since that which we love in venial sin, is loved for God's sake habitually though not actually. There is another cupidity, that of venial sin, which is always diminished by charity: and yet this cupidity cannot diminish charity, for the reason given above.
3. A movement of the free-will is requisite in the infusion of charity, as stated above (FS, Question , Article ). Wherefore that which diminishes the intensity of the free-will conduces dispositively to a diminution in the charity to be infused. On the other hand, no movement of the free-will is required for the safe-keeping of charity, else it would not remain inn us while we sleep. Hence charity does not decrease on account of an obstacle on the part of the intensity of the free-will's movement.
Objection: 1. It would seem that we cannot lose charity when once we have it. For if we lose it, this can only be through sin. Now he who has charity cannot sin, for it is written (1Jn 3,9): "Whosoever is born of God, committeth not sin; for His seed abideth in him, and he cannot sin, because he is born of God." But none save the children of God have charity, for it is this which distinguishes "the children of God from the children of perdition," as Augustine says (De Trin. xv, 17). Therefore he that has charity cannot lose it.
2. Further, Augustine says (De Trin. viii, 7) that "if love be not true, it should not be called love." Now, as he says again in a letter to Count Julian, "charity which can fail was never true." [*The quotation is from De Salutaribus Documentis ad quemdam comitem, vii., among the works of Paul of Friuli, more commonly known as Paul the Deacon, a monk of Monte Cassino.] Therefore it was no charity at all. Therefore, when once we have charity, we cannot lose it.
3. Further, Gregory says in a homily for Pentecost (In Evang. xxx) that "God's love works great things where it is; if it ceases to work it is not charity." Now no man loses charity by doing great things. Therefore if charity be there, it cannot be lost.
4. Further, the free-will is not inclined to sin unless by some motive for sinning. Now charity excludes all motives for sinning, both self-love and cupidity, and all such things. Therefore charity cannot be lost.
On the contrary It is written (Ap 2,4): "I have somewhat against thee, because thou hast left thy first charity."
I answer that The Holy Ghost dwells in us by charity, as shown above (Article ; Questions ,24). We can, accordingly, consider charity in three ways: First on the part of the Holy Ghost, Who moves the soul to love God, and in this respect charity is incompatible with sin through the power of the Holy Ghost, Who does unfailingly whatever He wills to do. Hence it is impossible for these two things to be true at the same time---that the Holy Ghost should will to move a certain man to an act of charity, and that this man, by sinning, should lose charity. For the gift of perseverance is reckoned among the blessings of God whereby "whoever is delivered, is most certainly delivered," as Augustine says in his book on the Predestination of the saints (De Dono Persev. xiv).Secondly, charity may be considered as such, and thus it is incapable of anything that is against its nature. Wherefore charity cannot sin at all, even as neither can heat cool, nor unrighteousness do good, as Augustine says (De Serm. Dom. in Monte ii, 24).Thirdly, charity can be considered on the part of its subject, which is changeable on account of the free-will. Moreover charity may be compared with this subject, both from the general point of view of form in comparison with matter, and from the specific point of view of habit as compared with power. Now it is natural for a form to be in its subject in such a way that it can be lost, when it does not entirely fill the potentiality of matter: this is evident in the forms of things generated and corrupted, because the matter of such things receives one form in such a way, that it retains the potentiality to another form, as though its potentiality were not completely satisfied with the one form. Hence the one form may be lost by the other being received. On the other hand the form of a celestial body which entirely fills the potentiality of its matter, so that the latter does not retain the potentiality to another form, is in its subject inseparably. Accordingly the charity of the blessed, because it entirely fills the potentiality of the rational mind, since every actual movement of that mind is directed to God, is possessed by its subject inseparably: whereas the charity of the wayfarer does not so fill the potentiality of its subject, because the latter is not always actually directed to God: so that when it is not actually directed to God, something may occur whereby charity is lost.It is proper to a habit to incline a power to act, and this belongs to a habit, in so far as it makes whatever is suitable to it, to seem good, and whatever is unsuitable, to seem evil. For as the taste judges of savors according to its disposition, even so does the human mind judge of things to be done, according to its habitual disposition. Hence the Philosopher says (Ethic. iii, 5) that "such as a man is, so does the end appear to him." Accordingly charity is inseparable from its possessor, where that which pertains to charity cannot appear otherwise than good, and that is in heaven, where God is seen in His Essence, which is the very essence of goodness. Therefore the charity of heaven cannot be lost, whereas the charity of the way can, because in this state God is not seen in His Essence, which is the essence of goodness.
Reply to Objection: 1. The passage quoted speaks from the point of view of the power of the Holy Ghost, by Whose safeguarding, those whom He wills to move are rendered immune from sin, as much as He wills.
2. The charity which can fail by reason of itself is no true charity; for this would be the case, were its love given only for a time, and afterwards were to cease, which would be inconsistent with true love. If, however, charity be lost through the changeableness of the subject, and against the purpose of charity included in its act, this is not contrary to true charity.
3. The love of God ever works great things in its purpose, which is essential to charity; but it does not always work great things in its act, on account of the condition of its subject.
4. Charity by reason of its act excludes every motive for sinning. But it happens sometimes that charity is not acting actually, and then it is possible for a motive to intervene for sinning, and if we consent to this motive, we lose charity.
Objection: 1. It would seem that charity is not lost through one mortal sin. For Origen says (Peri Archon i): "When a man who has mounted to the stage of perfection, is satiated, I do not think that he will become empty or fall away suddenly; but he must needs do so gradually and by little and little." But man falls away by losing charity. Therefore charity is not lost through only one mortal sin.
2. Further, Pope Leo in a sermon on the Passion (60) addresses Peter thus: "Our Lord saw in thee not a conquered faith, not an averted love, but constancy shaken. Tears abounded where love never failed, and the words uttered in trepidation were washed away by the fount of charity." From this Bernard [*William of St. Thierry, De Nat. et Dig. Amoris. vi.] drew his assertion that "charity in Peter was not quenched, but cooled." But Peter sinned mortally in denying Christ. Therefore charity is not lost through one mortal sin.
3. Further, charity is stronger than an acquired virtue. Now a habit of acquired virtue is not destroyed by one contrary sinful act. Much less, therefore, is charity destroyed by one contrary mortal sin.
4. Further, charity denotes love of God and our neighbor. Now, seemingly, one may commit a mortal sin, and yet retain the love of God and one's neighbor; because an inordinate affection for things directed to the end, does not remove the love for the end, as stated above (Article ). Therefore charity towards God can endure, though there be a mortal sin through an inordinate affection for some temporal good.
5. Further, the object of a theological virtue is the last end. Now the other theological virtues, namely faith and hope, are not done away by one mortal sin, in fact they remain though lifeless. Therefore charity can remain without a form, even when a mortal sin has been committed.
On the contrary By mortal sin man becomes deserving of eternal death, according to Rm 6,23: "The wages of sin is death." On the other hand whoever has charity is deserving of eternal life, for it is written (Jn 14,21): "He that loveth Me, shall be loved by My Father: and I will love Him, and will manifest Myself to him," in which manifestation everlasting life consists, according to Jn 17,3: "This is eternal life; that they may know Thee the . . . true God, and Jesus Christ Whom Thou hast sent." Now no man can be worthy, at the same time, of eternal life and of eternal death. Therefore it is impossible for a man to have charity with a mortal sin. Therefore charity is destroyed by one mortal sin.
I answer that That one contrary is removed by the other contrary supervening. Now every mortal sin is contrary to charity by its very nature, which consists in man's loving God above all things, and subjecting himself to Him entirely, by referring all that is his to God. It is therefore essential to charity that man should so love God as to wish to submit to Him in all things, and always to follow the rule of His commandments; since whatever is contrary to His commandments is manifestly contrary to charity, and therefore by its very nature is capable of destroying charity.If indeed charity were an acquired habit dependent on the power of its subject, it would not necessarily be removed by one mortal sin, for act is directly contrary, not to habit but to act. Now the endurance of a habit in its subject does not require the endurance of its act, so that when a contrary act supervenes the acquired habit is not at once done away. But charity, being an infused habit, depends on the action of God Who infuses it, Who stands in relation to the infusion and safekeeping of charity, as the sun does to the diffusion of light in the air, as stated above (Article , OBJ 3). Consequently, just as the light would cease at once in the air, were an obstacle placed to its being lit up by the sun, even so charity ceases at once to be in the soul through the placing of an obstacle to the outpouring of charity by God into the soul.Now it is evident that through every mortal sin which is contrary to God's commandments, an obstacle is placed to the outpouring of charity, since from the very fact that a man chooses to prefer sin to God's friendship, which requires that we should obey His will, it follows that the habit of charity is lost at once through one mortal sin. Hence Augustine says (Gn ad lit. viii, 12) that "man is enlightened by God's presence, but he is darkened at once by God's absence, because distance from Him is effected not by change of place but by aversion of the will."
Reply to Objection: 1. This saying of Origen may be understood, in one way, that a man who is in the state of perfection, does not suddenly go so far as to commit a mortal sin, but is disposed thereto by some previous negligence, for which reason venial sins are said to be dispositions to mortal sin, as stated above (FS, Question , Article ). Nevertheless he falls, and loses charity through the one mortal sin if he commits it.Since, however, he adds: "If some slight slip should occur, and he recover himself quickly he does not appear to fall altogether," we may reply in another way, that when he speaks of a man being emptied and falling away altogether, he means one who falls so as to sin through malice; and this does not occur in a perfect man all at once.
2. Charity may be lost in two ways; first, directly, by actual contempt, and, in this way, Peter did not lose charity. Secondly, indirectly, when a sin is committed against charity, through some passion of desire or fear; it was by sinning against charity in this way, that Peter lost charity; yet he soon recovered it.
3. The Reply to the Third Objection is evident from what has been said.
4. Not every inordinate affection for things directed to the end, i.e., for created goods, constitutes a mortal sin, but only such as is directly contrary to the Divine will; and then the inordinate affection is contrary to charity, as stated.
5. Charity denotes union with God, whereas faith and hope do not. Now every mortal sin consists in aversion from God, as stated above (Gn ad lit. viii, 12). Consequently every moral sin is contrary to charity, but not to faith and hope, but only certain determinate sins, which destroy the habit of faith or of hope, even as charity is destroyed by every moral sin. Hence it is evident that charity cannot remain lifeless, since it is itself the ultimate form regarding God under the aspect of last end as stated above (Question , Article ).
We must now consider the object of charity; which consideration will be twofold: (1) The things we ought to love out of charity: (2) The order in which they ought to be loved. Under the first head there are twelve points of inquiry:
(1) Whether we should love God alone, out of charity, or should we love our neighbor also?
(2) Whether charity should be loved out of charity?
(3) Whether irrational creatures ought to be loved out of charity?
(4) Whether one may love oneself out of charity?
(5) Whether one's own body?
(6) Whether sinners should be loved out of charity?
(7) Whether sinners love themselves?
(8) Whether we should love our enemies out of charity?
(9) Whether we are bound to show them tokens of friendship?
(10) Whether we ought to love the angels out of charity?
(11) Whether we ought to love the demons?
(12) How to enumerate the things we are bound to love out of charity.
Objection: 1. It would seem that the love of charity stops at God and does not extend to our neighbor. For as we owe God love, so do we owe Him fear, according Dt 10,12: "And now Israel, what doth the Lord thy God require of thee, but that thou fear . . . and love Him?" Now the fear with which we fear man, and which is called human fear, is distinct from the fear with which we fear God, and which is either servile or filial, as is evident from what has been stated above (Question , Article ). Therefore also the love with which we love God, is distinct from the love with which we love our neighbor.
2. Further, the Philosopher says (Ethic. viii, 8) that "to be loved is to be honored." Now the honor due to God, which is known as "latria," is distinct from the honor due to a creature, and known as "dulia." Therefore again the love wherewith we love God, is distinct from that with which we love our neighbor.
3. Further, hope begets charity, as a gloss states on Mt 1,2. Now hope is so due to God that it is reprehensible to hope in man, according to Jr 17,5: "Cursed be the man that trusteth in man." Therefore charity is so due to God, as not to extend to our neighbor.
On the contrary It is written (1Jn 4,21): "This commandment we have from God, that he, who loveth God, love also his brother."
I answer that As stated above (Question , Article ; Question , Article ; FS, Question , Article ) habits are not differentiated except their acts be of different species. For every act of the one species belongs to the same habit. Now since the species of an act is derived from its object, considered under its formal aspect, it follows of necessity that it is specifically the same act that tends to an aspect of the object, and that tends to the object under that aspect: thus it is specifically the same visual act whereby we see the light, and whereby we see the color under the aspect of light.Now the aspect under which our neighbor is to be loved, is God, since what we ought to love in our neighbor is that he may be in God. Hence it is clear that it is specifically the same act whereby we love God, and whereby we love our neighbor. Consequently the habit of charity extends not only to the love of God, but also to the love of our neighbor.
Reply to Objection: 1. We may fear our neighbor, even as we may love him, in two ways: first, on account of something that is proper to him, as when a man fears a tyrant on account of his cruelty, or loves him by reason of his own desire to get something from him. Such like human fear is distinct from the fear of God, and the same applies to love. Secondly, we fear a man, or love him on account of what he has of God; as when we fear the secular power by reason of its exercising the ministry of God for the punishment of evildoers, and love it for its justice: such like fear of man is not distinct from fear of God, as neither is such like love.
2. Love regards good in general, whereas honor regards the honored person's own good, for it is given to a person in recognition of his own virtue. Hence love is not differentiated specifically on account of the various degrees of goodness in various persons, so long as it is referred to one good common to all, whereas honor is distinguished according to the good belonging to individuals. Consequently we love all our neighbors with the same love of charity, in so far as they are referred to one good common to them all, which is God; whereas we give various honors to various people, according to each one's own virtue, and likewise to God we give the singular honor of latria on account of His singular virtue.
3. It is wrong to hope in man as though he were the principal author of salvation, but not, to hope in man as helping us ministerially under God. In like manner it would be wrong if a man loved his neighbor as though he were his last end, but not, if he loved him for God's sake; and this is what charity does.
Objection: 1. It would seem that charity need not be loved out of charity. For the things to be loved out of charity are contained in the two precepts of charity (Mt 22,37-39): and neither of them includes charity, since charity is neither God nor our neighbor. Therefore charity need not be loved out of charity.
2. Further, charity is founded on the fellowship of happiness, as stated above (Question , Article ). But charity cannot participate in happiness. Therefore charity need not be loved out of charity.
3. Further, charity is a kind of friendship, as stated above (Question , Article ). But no man can have friendship for charity or for an accident, since such things cannot return love for love, which is essential to friendship, as stated in Ethic. viii. Therefore charity need not be loved out of charity.
On the contrary Augustine says (De Trin. viii, 8): "He that loves his neighbor, must, in consequence, love love itself." But we love our neighbor out of charity. Therefore it follows that charity also is loved out of charity.
I answer that Charity is love. Now love, by reason of the nature of the power whose act it is, is capable of reflecting on itself; for since the object of the will is the universal good, whatever has the aspect of good, can be the object of an act of the will: and since to will is itself a good, man can will himself to will. Even so the intellect, whose object is the true, understands that it understands, because this again is something true. Love, however, even by reason of its own species, is capable of reflecting on itself, because it is a spontaneous movement of the lover towards the beloved, wherefore from the moment a man loves, he loves himself to love.Yet charity is not love simply, but has the nature of friendship, as stated above (Question , Article ). Now by friendship a thing is loved in two ways: first, as the friend for whom we have friendship, and to whom we wish good things: secondly, as the good which we wish to a friend. It is in the latter and not in the former way that charity is loved out of charity, because charity is the good which we desire for all those whom we love out of charity. The same applies to happiness, and to the other virtues.
Reply to Objection: 1. God and our neighbor are those with whom we are friends, but love of them includes the loving of charity, since we love both God and our neighbor, in so far as we love ourselves and our neighbor to love God, and this is to love charity.
2. Charity is itself the fellowship of the spiritual life, whereby we arrive at happiness: hence it is loved as the good which we desire for all whom we love out of charity.
3. This argument considers friendship as referred to those with whom we are friends.
Objection: 1. It would seem that irrational creatures also ought to be loved out of charity. For it is chiefly by charity that we are conformed to God. Now God loves irrational creatures out of charity, for He loves "all things that are" (Sg 11,25), and whatever He loves, He loves by Himself Who is charity. Therefore we also should love irrational creatures out of charity.
2. Further, charity is referred to God principally, and extends to other things as referable to God. Now just as the rational creature is referable to God, in as much as it bears the resemblance of image, so too, are the irrational creatures, in as much as they bear the resemblance of a trace [*Cf. FP, Question , Article ]. Therefore charity extends also to irrational creatures.
3. Further, just as the object of charity is God. so is the object of faith. Now faith extends to irrational creatures, since we believe that heaven and earth were created by God, that the fishes and birds were brought forth out of the waters, and animals that walk, and plants, out of the earth. Therefore charity extends also to irrational creatures.
On the contrary The love of charity extends to none but God and our neighbor. But the word neighbor cannot be extended to irrational creatures, since they have no fellowship with man in the rational life. Therefore charity does not extend to irrational creatures.
I answer that According to what has been stated above (Question , Article ) charity is a kind of friendship. Now the love of friendship is twofold: first, there is the love for the friend to whom our friendship is given, secondly, the love for those good things which we desire for our friend. With regard to the first, no irrational creature can be loved out of charity; and for three reasons. Two of these reasons refer in a general way to friendship, which cannot have an irrational creature for its object: first because friendship is towards one to whom we wish good things, while, properly speaking, we cannot wish good things to an irrational creature, because it is not competent, properly speaking, to possess good, this being proper to the rational creature which, through its free-will, is the master of its disposal of the good it possesses. Hence the Philosopher says (Phys. ii, 6) that we do not speak of good or evil befalling such like things, except metaphorically. Secondly, because all friendship is based on some fellowship in life; since "nothing is so proper to friendship as to live together," as the Philosopher proves (Ethic. viii, 5). Now irrational creatures can have no fellowship in human life which is regulated by reason. Hence friendship with irrational creatures is impossible, except metaphorically speaking. The third reason is proper to charity, for charity is based on the fellowship of everlasting happiness, to which the irrational creature cannot attain. Therefore we cannot have the friendship of charity towards an irrational creature.Nevertheless we can love irrational creatures out of charity, if we regard them as the good things that we desire for others, in so far, to wit, as we wish for their preservation, to God's honor and man's use; thus too does God love them out of charity.
Reply to Objection: 1. Wherefore the Reply to the First Objection is evident.
2. The likeness by way of trace does not confer the capacity for everlasting life, whereas the likeness of image does: and so the comparison fails.
3. Faith can extend to all that is in any way true, whereas the friendship of charity extends only to such things as have a natural capacity for everlasting life; wherefore the comparison fails.
Summa Th. II-II EN Qu.24 a.9