Summa Th. I-II EN Qu.28 a.2

Whether mutual indwelling is an effect of love?

Objection: 1. It would seem that love does not cause mutual indwelling, so that the lover be in the beloved and vice versa. For that which is in another is contained in it. But the same cannot be container and contents. Therefore love cannot cause mutual indwelling, so that the lover be in the beloved and vice versa.
2. Further, nothing can penetrate within a whole, except by means of a division of the whole. But it is the function of the reason, not of the appetite where love resides, to divide things that are really united. Therefore mutual indwelling is not an effect of love.
3. Further, if love involves the lover being in the beloved and vice versa, it follows that the beloved is united to the lover, in the same way as the lover is united to the beloved. But the union itself is love, as stated above (Article [1]). Therefore it follows that the lover is always loved by the object of his love; which is evidently false. Therefore mutual indwelling is not an effect of love.

On the contrary It is written (1Jn 4,16): "He that abideth in charity abideth in God, and God in him." Now charity is the love of God. Therefore, for the same reason, every love makes the beloved to be in the lover, and vice versa.
I answer that This effect of mutual indwelling may be understood as referring both to the apprehensive and to the appetitive power. Because, as to the apprehensive power, the beloved is said to be in the lover, inasmuch as the beloved abides in the apprehension of the lover, according to Ph 1,7, "For that I have you in my heart": while the lover is said to be in the beloved, according to apprehension, inasmuch as the lover is not satisfied with a superficial apprehension of the beloved, but strives to gain an intimate knowledge of everything pertaining to the beloved, so as to penetrate into his very soul. Thus it is written concerning the Holy Ghost, Who is God's Love, that He "searcheth all things, yea the deep things of God" (1Co 2,10).As the appetitive power, the object loved is said to be in the lover, inasmuch as it is in his affections, by a kind of complacency: causing him either to take pleasure in it, or in its good, when present; or, in the absence of the object loved, by his longing, to tend towards it with the love of concupiscence, or towards the good that he wills to the beloved, with the love of friendship: not indeed from any extrinsic cause (as when we desire one thing on account of another, or wish good to another on account of something else), but because the complacency in the beloved is rooted in the lover's heart. For this reason we speak of love as being "intimate"; and "of the bowels of charity." On the other hand, the lover is in the beloved, by the love of concupiscence and by the love of friendship, but not in the same way. For the love of concupiscence is not satisfied with any external or superficial possession or enjoyment of the beloved; but seeks to possess the beloved perfectly, by penetrating into his heart, as it were. Whereas, in the love of friendship, the lover is in the beloved, inasmuch as he reckons what is good or evil to his friend, as being so to himself; and his friend's will as his own, so that it seems as though he felt the good or suffered the evil in the person of his friend. Hence it is proper to friends "to desire the same things, and to grieve and rejoice at the same," as the Philosopher says (Ethic. ix, 3 and Rhet. ii, 4). Consequently in so far as he reckons what affects his friend as affecting himself, the lover seems to be in the beloved, as though he were become one with him: but in so far as, on the other hand, he wills and acts for his friend's sake as for his own sake, looking on his friend as identified with himself, thus the beloved is in the lover.In yet a third way, mutual indwelling in the love of friendship can be understood in regard to reciprocal love: inasmuch as friends return love for love, and both desire and do good things for one another.

Reply to Objection: 1. The beloved is contained in the lover, by being impressed on his heart and thus becoming the object of his complacency. On the other hand, the lover is contained in the beloved, inasmuch as the lover penetrates, so to speak, into the beloved. For nothing hinders a thing from being both container and contents in different ways: just as a genus is contained in its species, and vice versa.
2. The apprehension of the reason precedes the movement of love. Consequently, just as the reason divides, so does the movement of love penetrate into the beloved, as was explained above.
3. This argument is true of the third kind of mutual indwelling, which is not to be found in every kind of love.

Whether ecstasy is an effect of love?

Objection: 1. It would seem that ecstasy is not an effect of love. For ecstasy seems to imply loss of reason. But love does not always result in loss of reason: for lovers are masters of themselves at times. Therefore love does not cause ecstasy.
2. Further, the lover desires the beloved to be united to him. Therefore he draws the beloved to himself, rather than betakes himself into the beloved, going forth out from himself as it were.
3. Further, love unites the beloved to the lover, as stated above (Article [1]). If, therefore, the lover goes out from himself, in order to betake himself into the beloved, it follows that the lover always loves the beloved more than himself: which is evidently false. Therefore ecstasy is not an effect of love.

On the contrary Dionysius says (Div. Nom. iv) that "the Divine love produces ecstasy," and that "God Himself suffered ecstasy through love." Since therefore according to the same author (Div. Nom. iv), every love is a participated likeness of the Divine Love, it seems that every love causes ecstasy.
I answer that To suffer ecstasy means to be placed outside oneself. This happens as to the apprehensive power and as to the appetitive power. As to the apprehensive power, a man is said to be placed outside himself, when he is placed outside the knowledge proper to him. This may be due to his being raised to a higher knowledge; thus, a man is said to suffer ecstasy, inasmuch as he is placed outside the connatural apprehension of his sense and reason, when he is raised up so as to comprehend things that surpass sense and reason: or it may be due to his being cast down into a state of debasement; thus a man may be said to suffer ecstasy, when he is overcome by violent passion or madness. As to the appetitive power, a man is said to suffer ecstasy, when that power is borne towards something else, so that it goes forth out from itself, as it were.The first of these ecstasies is caused by love dispositively in so far, namely, as love makes the lover dwell on the beloved, as stated above (Article [2]), and to dwell intently on one thing draws the mind from other things. The second ecstasy is caused by love directly; by love of friendship, simply; by love of concupiscence not simply but in a restricted sense. Because in love of concupiscence, the lover is carried out of himself, in a certain sense; in so far, namely, as not being satisfied with enjoying the good that he has, he seeks to enjoy something outside himself. But since he seeks to have this extrinsic good for himself, he does not go out from himself simply, and this movement remains finally within him. On the other hand, in the love of friendship, a man's affection goes out from itself simply; because he wishes and does good to his friend, by caring and providing for him, for his sake.

Reply to Objection: 1. This argument is true of the first kind of ecstasy.
2. This argument applies to love of concupiscence, which, as stated above, does not cause ecstasy simply.
3. He who loves, goes out from himself, in so far as he wills the good of his friend and works for it. Yet he does not will the good of his friend more than his own good: and so it does not follow that he loves another more than himself.

Whether zeal is an effect of love?

Objection: 1. It would seem that zeal is not an effect of love. For zeal is a beginning of contention; wherefore it is written (1Co 3,3): "Whereas there is among you zeal [Douay: 'envying'] and contention," etc. But contention is incompatible with love. Therefore zeal is not an effect of love.
2. Further, the object of love is the good, which communicates itself to others. But zeal is opposed to communication; since it seems an effect of zeal, that a man refuses to share the object of his love with another: thus husbands are said to be jealous of [zelare] their wives, because they will not share them with others. Therefore zeal is not an effect of love.
3. Further, there is no zeal without hatred, as neither is there without love: for it is written (Ps 72,3): "I had a zeal on occasion of the wicked." Therefore it should not be set down as an effect of love any more than of hatred.

On the contrary Dionysius says (Div. Nom. iv): "God is said to be a zealot, on account of his great love for all things."
I answer that Zeal, whatever way we take it, arises from the intensity of love. For it is evident that the more intensely a power tends to anything, the more vigorously it withstands opposition or resistance. Since therefore love is "a movement towards the object loved," as Augustine says (Questions. 83, qu. 35), an intense love seeks to remove everything that opposes it.But this happens in different ways according to love of concupiscence, and love of friendship. For in love of concupiscence he who desires something intensely, is moved against all that hinders his gaining or quietly enjoying the object of his love. It is thus that husbands are said to be jealous of their wives, lest association with others prove a hindrance to their exclusive individual rights. In like manner those who seek to excel, are moved against those who seem to excel, as though these were a hindrance to their excelling. And this is the zeal of envy, of which it is written (Ps 36,1): "Be not emulous of evil doers, nor envy [zelaveris] them that work iniquity."On the other hand, love of friendship seeks the friend's good: wherefore, when it is intense, it causes a man to be moved against everything that opposes the friend's good. In this respect, a man is said to be zealous on behalf of his friend, when he makes a point of repelling whatever may be said or done against the friend's good. In this way, too, a man is said to be zealous on God's behalf, when he endeavors, to the best of his means, to repel whatever is contrary to the honor or will of God; according to 1R 19,14: "With zeal I have been zealous for the Lord of hosts." Again on the words of Jn 2,17: "The zeal of Thy house hath eaten me up," a gloss says that "a man is eaten up with a good zeal, who strives to remedy whatever evil he perceives; and if he cannot, bears with it and laments it."

Reply to Objection: 1. The Apostle is speaking in this passage of the zeal of envy; which is indeed the cause of contention, not against the object of love, but for it, and against that which is opposed to it.
2. Good is loved inasmuch as it can be communicated to the lover. Consequently whatever hinders the perfection of this communication, becomes hateful. Thus zeal arises from love of good. But through defect of goodness, it happens that certain small goods cannot, in their entirety, be possessed by many at the same time: and from the love of such things arises the zeal of envy. But it does not arise, properly speaking, in the case of those things which, in their entirety, can be possessed by many: for no one envies another the knowledge of truth, which can be known entirely by many; except perhaps one may envy another his superiority in the knowledge of it.
3. The very fact that a man hates whatever is opposed to the object of his love, is the effect of love. Hence zeal is set down as an effect of love rather than of hatred.

Whether love is a passion that wounds the lover?

Objection: 1. It would seem that love wounds the lover. For languor denotes a hurt in the one that languishes. But love causes languor: for it is written (Ct 2,5): "Stay me up with flowers, compass me about with apples; because I languish with love." Therefore love is a wounding passion.
2. Further, melting is a kind of dissolution. But love melts that in which it is: for it is written (Ct 5,6): "My soul melted when my beloved spoke." Therefore love is a dissolvent: therefore it is a corruptive and a wounding passion.
3. Further, fervor denotes a certain excess of heat; which excess has a corruptive effect. But love causes fervor: for Dionysius (Coel. Hier. vii) in reckoning the properties belonging to the Seraphim's love, includes "hot" and "piercing" and "most fervent." Moreover it is said of love (Ct 8,6) that "its lamps are fire and flames." Therefore love is a wounding and corruptive passion.

On the contrary Dionysius says (Div. Nom. iv) that "everything loves itself with a love that holds it together," i.e. that preserves it. Therefore love is not a wounding passion, but rather one that preserves and perfects.
I answer that As stated above (Question [26], Articles [1],2; Question [27], Article [1]), love denotes a certain adapting of the appetitive power to some good. Now nothing is hurt by being adapted to that which is suitable to it; rather, if possible, it is perfected and bettered. But if a thing be adapted to that which is not suitable to it, it is hurt and made worse thereby. Consequently love of a suitable good perfects and betters the lover; but love of a good which is unsuitable to the lover, wounds and worsens him. Wherefore man is perfected and bettered chiefly by the love of God: but is wounded and worsened by the love of sin, according to Os 9,10: "They became abominable, as those things which they loved."And let this be understood as applying to love in respect of its formal element, i.e. in regard to the appetite. But in respect of the material element in the passion of love, i.e. a certain bodily change, it happens that love is hurtful, by reason of this change being excessive: just as it happens in the senses, and in every act of a power of the soul that is exercised through the change of some bodily organ.

Reply to Objection: 1.In reply to the objections, it is to be observed that four proximate effects may be ascribed to love: viz. melting, enjoyment, languor, and fervor. Of these the first is "melting," which is opposed to freezing. For things that are frozen, are closely bound together, so as to be hard to pierce. But it belongs to love that the appetite is fitted to receive the good which is loved, inasmuch as the object loved is in the lover, as stated above (Article [2]). Consequently the freezing or hardening of the heart is a disposition incompatible with love: while melting denotes a softening of the heart, whereby the heart shows itself to be ready for the entrance of the beloved. If, then, the beloved is present and possessed, pleasure or enjoyment ensues. But if the beloved be absent, two passions arise; viz. sadness at its absence, which is denoted by "languor" (hence Cicero in De Tusc. Quaest. iii, 11 applies the term "ailment" chiefly to sadness); and an intense desire to possess the beloved, which is signified by "fervor." And these are the effects of love considered formally, according to the relation of the appetitive power to its object. But in the passion of love, other effects ensue, proportionate to the above, in respect of a change in the organ.

Whether love is cause of all that the lover does?

Objection: 1. It would seem that the lover does not do everything from love. For love is a passion, as stated above (Question [26], Article [2]). But man does not do everything from passion: but some things he does from choice, and some things from ignorance, as stated in Ethic. v, 8. Therefore not everything that a man does, is done from love.
2. Further, the appetite is a principle of movement and action in all animals, as stated in De Anima iii, 10. If, therefore, whatever a man does is done from love, the other passions of the appetitive faculty are superfluous.
3. Further, nothing is produced at one and the same time by contrary causes. But some things are done from hatred. Therefore all things are not done from love.

On the contrary Dionysius says (Div. Nom. iv) that "all things, whatever they do, they do for the love of good."
I answer that Every agent acts for an end, as stated above (Question [1], Article [2]). Now the end is the good desired and loved by each one. Wherefore it is evident that every agent, whatever it be, does every action from love of some kind.

Reply to Objection: 1. This objection takes love as a passion existing in the sensitive appetite. But here we are speaking of love in a general sense, inasmuch as it includes intellectual, rational, animal, and natural love: for it is in this sense that Dionysius speaks of love in chapter iv of De Divinis Nominibus.
2. As stated above (Article [5]; Question [27], Article [4]) desire, sadness and pleasure, and consequently all the other passions of the soul, result from love. Wherefore every act proceeds from any passion, proceeds also from love as from a first cause: and so the other passions, which are proximate causes, are not superfluous.
3. Hatred also is a result of love, as we shall state further on (Question [29], Article [2]).


We must now consider hatred: concerning which there are six points of inquiry:

(1) Whether evil is the cause and the object of hatred?

(2) Whether love is the cause of hatred?

(3) Whether hatred is stronger than love?

(4) Whether a man can hate himself?

(5) Whether a man can hate the truth?

(6) Whether a thing can be the object of universal hatred?

Whether evil is the cause and object of hatred?

Objection: 1. It would seem that evil is not the object and cause of hatred. For everything that exists, as such, is good. If therefore evil be the object of hatred, it follows that nothing but the lack of something can be the object of hatred: which is clearly untrue.
2. Further, hatred of evil is praise-worthy; hence (2M 2M 3,1) some are praised for that "the laws were very well kept, because of the godliness of Onias the high-priest, and the hatred of their souls [Douay: 'his soul'] had no evil." If, therefore, nothing but evil be the object of hatred, it would follow that all hatred is commendable: and this is clearly false.
3. Further, the same thing is not at the same time both good and evil. But the same thing is lovable and hateful to different subjects. Therefore hatred is not only of evil, but also of good.

On the contrary Hatred is the opposite of love. But the object of love is good, as stated above (Question [26], Article [1]; Question [27], Article [1]). Therefore the object of hatred is evil.
I answer that Since the natural appetite is the result of apprehension (though this apprehension is not in the same subject as the natural appetite), it seems that what applies to the inclination of the natural appetite, applies also to the animal appetite, which does result from an apprehension in the same subject, as stated above (Question [26], Article [1]). Now, with regard to the natural appetite, it is evident, that just as each thing is naturally attuned and adapted to that which is suitable to it, wherein consists natural love; so has it a natural dissonance from that which opposes and destroys it; and this is natural hatred. So, therefore, in the animal appetite, or in the intellectual appetite, love is a certain harmony of the appetite with that which is apprehended as suitable; while hatred is dissonance of the appetite from that which is apprehended as repugnant and hurtful. Now, just as whatever is suitable, as such, bears the aspect of good; so whatever is repugnant, as such, bears the aspect of evil. And therefore, just as good is the object of love, so evil is the object of hatred.

Reply to Objection: 1. Being, as such, has not the aspect of repugnance but only of fittingness; because being is common to all things. But being, inasmuch as it is this determinate being, has an aspect of repugnance to some determinate being. And in this way, one being is hateful to another, and is evil; though not in itself, but by comparison with something else.
2. Just as a thing may be apprehended as good, when it is not truly good; so a thing may be apprehended as evil, whereas it is not truly evil. Hence it happens sometimes that neither hatred of evil nor love of good is good.
3. To different things the same thing may be lovable or hateful: in respect of the natural appetite, owing to one and the same thing being naturally suitable to one thing, and naturally unsuitable to another: thus heat is becoming to fire and unbecoming to water: and in respect of the animal appetite, owing to one and the same thing being apprehended by one as good, by another as bad.

Whether love is a cause of hatred?

Objection: 1. It would seem that love is not a cause of hatred. For "the opposite members of a division are naturally simultaneous" (Praedic. x). But love and hatred are opposite members of a division, since they are contrary to one another. Therefore they are naturally simultaneous. Therefore love is not the cause of hatred.
2. Further, of two contraries, one is not the cause of the other. But love and hatred are contraries. Therefore love is not the cause of hatred.
3. Further, that which follows is not the cause of that which precedes. But hatred precedes love, seemingly: since hatred implies a turning away from evil, whereas love implies a turning towards good. Therefore love is not the cause of hatred.

On the contrary Augustine says (De Civ. Dei xiv, 7,9) that all emotions are caused by love. Therefore hatred also, since it is an emotion of the soul, is caused by love.
I answer that As stated above (Article [1]), love consists in a certain agreement of the lover with the object loved, while hatred consists in a certain disagreement or dissonance. Now we should consider in each thing, what agrees with it, before that which disagrees: since a thing disagrees with another, through destroying or hindering that which agrees with it. Consequently love must needs precede hatred; and nothing is hated, save through being contrary to a suitable thing which is loved. And hence it is that every hatred is caused by love.

Reply to Objection: 1. The opposite members of a division are sometimes naturally simultaneous, both really and logically; e.g. two species of animal, or two species of color. Sometimes they are simultaneous logically, while, in reality, one precedes, and causes the other; e.g. the species of numbers, figures and movements. Sometimes they are not simultaneous either really or logically; e.g. substance and accident; for substance is in reality the cause of accident; and being is predicated of substance before it is predicated of accident, by a priority of reason, because it is not predicated of accident except inasmuch as the latter is in substance. Now love and hatred are naturally simultaneous, logically but not really. Wherefore nothing hinders love from being the cause of hatred.
2. Love and hatred are contraries if considered in respect of the same thing. But if taken in respect of contraries, they are not themselves contrary, but consequent to one another: for it amounts to the same that one love a certain thing, or that one hate its contrary. Thus love of one thing is the cause of one's hating its contrary.
3. In the order of execution, the turning away from one term precedes the turning towards the other. But the reverse is the case in the order of intention: since approach to one term is the reason for turning away from the other. Now the appetitive movement belongs rather to the order of intention than to that of execution. Wherefore love precedes hatred: because each is an appetitive movement.

Whether hatred is stronger than love?

Objection: 1. It would seem that hatred is stronger than love. For Augustine says (Questions. 83, qu. 36): "There is no one who does not flee from pain, more than he desires pleasure." But flight from pain pertains to hatred; while desire for pleasure belongs to love. Therefore hatred is stronger than love.
2. Further, the weaker is overcome by the stronger. But love is overcome by hatred: when, that is to say, love is turned into hatred. Therefore hatred is stronger than love.
3. Further, the emotions of the soul are shown by their effects. But man insists more on repelling what is hateful, than on seeking what is pleasant: thus also irrational animals refrain from pleasure for fear of the whip, as Augustine instances (Questions. 83, qu. 36). Therefore hatred is stronger than love.

On the contrary Good is stronger than evil; because "evil does nothing except in virtue of good," as Dionysius says (Div. Nom. iv). But hatred and love differ according to the difference of good and evil. Therefore love is stronger than hatred.
I answer that It is impossible for an effect to be stronger than its cause. Now every hatred arises from some love as its cause, as above stated (Article [2]). Therefore it is impossible for hatred to be stronger than love absolutely.But furthermore, love must needs be, absolutely speaking, stronger than hatred. Because a thing is moved to the end more strongly than to the means. Now turning away from evil is directed as a means to the gaining of good. Wherefore, absolutely speaking, the soul's movement in respect of good is stronger than its movement in respect of evil.Nevertheless hatred sometimes seems to be stronger than love, for two reasons. First, because hatred is more keenly felt than love. For, since the sensitive perception is accompanied by a certain impression; when once the impression has been received it is not felt so keenly as in the moment of receiving it. Hence the heat of a hectic fever, though greater, is nevertheless not felt so much as the heat of tertian fever; because the heat of the hectic fever is habitual and like a second nature. For this reason, love is felt more keenly in the absence of the object loved; thus Augustine says (De Trin. x, 12) that "love is felt more keenly when we lack what we love." And for the same reason, the unbecomingness of that which is hated is felt more keenly than the becomingness of that which is loved. Secondly, because comparison is made between a hatred and a love which are not mutually corresponding. Because, according to different degrees of good there are different degrees of love to which correspond different degrees of hatred. Wherefore a hatred that corresponds to a greater love, moves us more than a lesser love.

Reply to Objection: 1. Hence it is clear how to reply to the First Objection. For the love of pleasure is less than the love of self-preservation, to which corresponds flight from pain. Wherefore we flee from pain more than we love pleasure.

Whether a man can hate himself?

Objection: 1. It would seem that a man can hate himself. For it is written (Ps 10,6): "He that loveth iniquity, hateth his own soul." But many love iniquity. Therefore many hate themselves.
2. Further, him we hate, to whom we wish and work evil. But sometimes a man wishes and works evil to himself, e.g. a man who kills himself. Therefore some men hate themselves.
3. Further, Boethius says (De Consol. ii) that "avarice makes a man hateful"; whence we may conclude that everyone hates a miser. But some men are misers. Therefore they hate themselves.

On the contrary The Apostle says (Ep 5,29) that "no man ever hated his own flesh."
I answer that Properly speaking, it is impossible for a man to hate himself. For everything naturally desires good, nor can anyone desire anything for himself, save under the aspect of good: for "evil is outside the scope of the will," as Dionysius says (Div. Nom. iv). Now to love a man is to will good to him, as stated above (Question [26], Article [4]). Consequently, a man must, of necessity, love himself; and it is impossible for a man to hate himself, properly speaking.But accidentally it happens that a man hates himself: and this in two ways. First, on the part of the good which a man wills to himself. For it happens sometimes that what is desired as good in some particular respect, is simply evil; and in this way, a man accidentally wills evil to himself; and thus hates himself. Secondly, in regard to himself, to whom he wills good. For each thing is that which is predominant in it; wherefore the state is said to do what the king does, as if the king were the whole state. Now it is clear that man is principally the mind of man. And it happens that some men account themselves as being principally that which they are in their material and sensitive nature. Wherefore they love themselves according to what they take themselves to be, while they hate that which they really are, by desiring what is contrary to reason. And in both these ways, "he that loveth iniquity hateth" not only "his own soul," but also himself.

Reply to Objection: 1. Wherefore the reply to the First Objection is evident.
2. No man wills and works evil to himself, except he apprehend it under the aspect of good. For even they who kill themselves, apprehend death itself as a good, considered as putting an end to some unhappiness or pain.
3. The miser hates something accidental to himself, but not for that reason does he hate himself: thus a sick man hates his sickness for the very reason that he loves himself. Or we may say that avarice makes man hateful to others, but not to himself. In fact, it is caused by inordinate self-love, in respect of which, man desires temporal goods for himself more than he should.

Whether a man can hate the truth?

Objection: 1. It would seem that a man cannot hate the truth. For good, true, and being are convertible. But a man cannot hate good. Neither, therefore, can he hate the truth.
2. Further, "All men have a natural desire for knowledge," as stated in the beginning of the Metaphysics i, 1. But knowledge is only of truth. Therefore truth is naturally desired and loved. But that which is in a thing naturally, is always in it. Therefore no man can hate the truth.
3. Further, the Philosopher says (Rhet. ii, 4) that "men love those who are straightforward." But there can be no other motive for this save truth. Therefore man loves the truth naturally. Therefore he cannot hate it.

On the contrary The Apostle says (Ga 4,16): "Am I become your enemy because I tell you the truth?" [*St. Thomas quotes the passage, probably from memory, as though it were an assertion: "I am become," etc.]
I answer that Good, true and being are the same in reality, but differ as considered by reason. For good is considered in the light of something desirable, while being and true are not so considered: because good is "what all things seek." Wherefore good, as such, cannot be the object of hatred, neither in general nor in particular. Being and truth in general cannot be the object of hatred: because disagreement is the cause of hatred, and agreement is the cause of love; while being and truth are common to all things. But nothing hinders some particular being or some particular truth being an object of hatred, in so far as it is considered as hurtful and repugnant; since hurtfulness and repugnance are not incompatible with the notion of being and truth, as they are with the notion of good.Now it may happen in three ways that some particular truth is repugnant or hurtful to the good we love. First, according as truth is in things as in its cause and origin. And thus man sometimes hates a particular truth, when he wishes that what is true were not true. Secondly, according as truth is in man's knowledge, which hinders him from gaining the object loved: such is the case of those who wish not to know the truth of faith, that they may sin freely; in whose person it is said (Jb 21,14): "We desire not the knowledge of Thy ways." Thirdly, a particular truth is hated, as being repugnant, inasmuch as it is in the intellect of another man: as, for instance, when a man wishes to remain hidden in his sin, he hates that anyone should know the truth about his sin. In this respect, Augustine says (Confess. x, 23) that men "love truth when it enlightens, they hate it when it reproves."

Reply to Objection: 1. This suffices for the Reply to the First Objection.
2. The knowledge of truth is lovable in itself: hence Augustine says that men love it when it enlightens. But accidentally, the knowledge of truth may become hateful, in so far as it hinders one from accomplishing one's desire.
3. The reason why we love those who are straightforward is that they make known the truth, and the knowledge of the truth, considered in itself, is a desirable thing.

Summa Th. I-II EN Qu.28 a.2