Summa Th. I-II EN Qu.2 a.2
Objection: 1. It would seem that man's happiness consists in honors. For happiness or bliss is "the reward of virtue," as the Philosopher says (Ethic. i, 9). But honor more than anything else seems to be that by which virtue is rewarded, as the Philosopher says (Ethic. iv, 3). Therefore happiness consists especially in honor.
2. Further, that which belongs to God and to persons of great excellence seems especially to be happiness, which is the perfect good. But that is honor, as the Philosopher says (Ethic. iv, 3). Moreover, the Apostle says (1Tm 1,17): "To . . . the only God be honor and glory." Therefore happiness consists in honor.
3. Further, that which man desires above all is happiness. But nothing seems more desirable to man than honor: since man suffers loss in all other things, lest he should suffer loss of honor. Therefore happiness consists in honor.
On the contrary Happiness is in the happy. But honor is not in the honored, but rather in him who honors, and who offers deference to the person honored, as the Philosopher says (Ethic. i, 5). Therefore happiness does not consist in honor.
I answer that It is impossible for happiness to consist in honor. For honor is given to a man on account of some excellence in him; and consequently it is a sign and attestation of the excellence that is in the person honored. Now a man's excellence is in proportion, especially to his happiness, which is man's perfect good; and to its parts, i.e. those goods by which he has a certain share of happiness. And therefore honor can result from happiness, but happiness cannot principally consist therein.
Reply to Objection: 1. As the Philosopher says (Ethic. i, 5), honor is not that reward of virtue, for which the virtuous work: but they receive honor from men by way of reward, "as from those who have nothing greater to offer." But virtue's true reward is happiness itself, for which the virtuous work: whereas if they worked for honor, it would no longer be a virtue, but ambition.
2. Honor is due to God and to persons of great excellence as a sign of attestation of excellence already existing: not that honor makes them excellent.
3. That man desires honor above all else, arises from his natural desire for happiness, from which honor results, as stated above. Wherefore man seeks to be honored especially by the wise, on whose judgment he believes himself to be excellent or happy.
Objection: 1. It would seem that man's happiness consists in glory. For happiness seems to consist in that which is paid to the saints for the trials they have undergone in the world. But this is glory: for the Apostle says (Rm 8,18): "The sufferings of this time are not worthy to be compared with the glory to come, that shall be revealed in us." Therefore happiness consists in glory.
2. Further, good is diffusive of itself, as stated by Dionysius (Div. Nom. iv). But man's good is spread abroad in the knowledge of others by glory more than by anything else: since, according to Ambrose [*Augustine, Contra Maxim. Arian. ii. 13], glory consists "in being well known and praised." Therefore man's happiness consists in glory.
3. Further, happiness is the most enduring good. Now this seems to be fame or glory; because by this men attain to eternity after a fashion. Hence Boethius says (De Consol. ii): "You seem to beget unto yourselves eternity, when you think of your fame in future time." Therefore man's happiness consists in fame or glory.
On the contrary Happiness is man's true good. But it happens that fame or glory is false: for as Boethius says (De Consol. iii), "many owe their renown to the lying reports spread among the people. Can anything be more shameful? For those who receive false fame, must needs blush at their own praise." Therefore man's happiness does not consist in fame or glory.
I answer that Man's happiness cannot consist in human fame or glory. For glory consists "in being well known and praised," as Ambrose [*Augustine, Contra Maxim. Arian. ii, 13] says. Now the thing known is related to human knowledge otherwise than to God's knowledge: for human knowledge is caused by the things known, whereas God's knowledge is the cause of the things known. Wherefore the perfection of human good, which is called happiness, cannot be caused by human knowledge: but rather human knowledge of another's happiness proceeds from, and, in a fashion, is caused by, human happiness itself, inchoate or perfect. Consequently man's happiness cannot consist in fame or glory. On the other hand, man's good depends on God's knowledge as its cause. And therefore man's beatitude depends, as on its cause, on the glory which man has with God; according to Ps 90,15-16: "I will deliver him, and I will glorify him; I will fill him with length of days, and I will show him my salvation."Furthermore, we must observe that human knowledge often fails, especially in contingent singulars, such as are human acts. For this reason human glory is frequently deceptive. But since God cannot be deceived, His glory is always true; hence it is written (2Co 10,18): "He . . . is approved . . . whom God commendeth."
Reply to Objection: 1. The Apostle speaks, then, not of the glory which is with men, but of the glory which is from God, with His Angels. Hence it is written (Mc 8,38): "The Son of Man shall confess him in the glory of His Father, before His angels" [*St. Thomas joins Mc 8,38 with Lc 12,8 owing to a possible variant in his text, or to the fact that he was quoting from memory].
2. A man's good which, through fame or glory, is in the knowledge of many, if this knowledge be true, must needs be derived from good existing in the man himself: and hence it presupposes perfect or inchoate happiness. But if the knowledge be false, it does not harmonize with the thing: and thus good does not exist in him who is looked upon as famous. Hence it follows that fame can nowise make man happy.
3. Fame has no stability; in fact, it is easily ruined by false report. And if sometimes it endures, this is by accident. But happiness endures of itself, and for ever.
Objection: 1. It would seem that happiness consists in power. For all things desire to become like to God, as to their last end and first beginning. But men who are in power, seem, on account of the similarity of power, to be most like to God: hence also in Scripture they are called "gods" (Ex 22,28), "Thou shalt not speak ill of the gods." Therefore happiness consists in power.
2. Further, happiness is the perfect good. But the highest perfection for man is to be able to rule others; which belongs to those who are in power. Therefore happiness consists in power.
3. Further, since happiness is supremely desirable, it is contrary to that which is before all to be shunned. But, more than aught else, men shun servitude, which is contrary to power. Therefore happiness consists in power.
On the contrary Happiness is the perfect good. But power is most imperfect. For as Boethius says (De Consol. iii), "the power of man cannot relieve the gnawings of care, nor can it avoid the thorny path of anxiety": and further on: "Think you a man is powerful who is surrounded by attendants, whom he inspires with fear indeed, but whom he fears still more?"
I answer that It is impossible for happiness to consist in power; and this for two reasons. First because power has the nature of principle, as is stated in Metaph. v, 12, whereas happiness has the nature of last end. Secondly, because power has relation to good and evil: whereas happiness is man's proper and perfect good. Wherefore some happiness might consist in the good use of power, which is by virtue, rather than in power itself.Now four general reasons may be given to prove that happiness consists in none of the foregoing external goods. First, because, since happiness is man's supreme good, it is incompatible with any evil. Now all the foregoing can be found both in good and in evil men. Secondly, because, since it is the nature of happiness to "satisfy of itself," as stated in Ethic. i, 7, having gained happiness, man cannot lack any needful good. But after acquiring any one of the foregoing, man may still lack many goods that are necessary to him; for instance, wisdom, bodily health, and such like. Thirdly, because, since happiness is the perfect good, no evil can accrue to anyone therefrom. This cannot be said of the foregoing: for it is written (Qo 5,12) that "riches" are sometimes "kept to the hurt of the owner"; and the same may be said of the other three. Fourthly, because man is ordained to happiness through principles that are in him; since he is ordained thereto naturally. Now the four goods mentioned above are due rather to external causes, and in most cases to fortune; for which reason they are called goods of fortune. Therefore it is evident that happiness nowise consists in the foregoing.
Reply to Objection: 1. God's power is His goodness: hence He cannot use His power otherwise than well. But it is not so with men. Consequently it is not enough for man's happiness, that he become like God in power, unless he become like Him in goodness also.
2. Just as it is a very good thing for a man to make good use of power in ruling many, so is it a very bad thing if he makes a bad use of it. And so it is that power is towards good and evil.
3. Servitude is a hindrance to the good use of power: therefore is it that men naturally shun it; not because man's supreme good consists in power.
Objection: 1. It would seem that man's happiness consists in bodily goods. For it is written (Si 30,16): "There is no riches above the riches of the health of the body." But happiness consists in that which is best. Therefore it consists in the health of the body.
2. Further, Dionysius says (Div. Nom. v), that "to be" is better than "to live," and "to live" is better than all that follows. But for man's being and living, the health of the body is necessary. Since, therefore, happiness is man's supreme good, it seems that health of the body belongs more than anything else to happiness.
3. Further, the more universal a thing is, the higher the principle from which it depends; because the higher a cause is, the greater the scope of its power. Now just as the causality of the efficient cause consists in its flowing into something, so the causality of the end consists in its drawing the appetite. Therefore, just as the First Cause is that which flows into all things, so the last end is that which attracts the desire of all. But being itself is that which is most desired by all. Therefore man's happiness consists most of all in things pertaining to his being, such as the health of the body.
On the contrary Man surpasses all other animals in regard to happiness. But in bodily goods he is surpassed by many animals; for instance, by the elephant in longevity, by the lion in strength, by the stag in fleetness. Therefore man's happiness does not consist in goods of the body.
I answer that It is impossible for man's happiness to consist in the goods of the body; and this for two reasons.
First, because, if a thing be ordained to another as to its end, its last end cannot consist in the preservation of its being. Hence a captain does not intend as a last end, the preservation of the ship entrusted to him, since a ship is ordained to something else as its end, viz. to navigation. Now just as the ship is entrusted to the captain that he may steer its course, so man is given over to his will and reason; according to Si 15,14: "God made man from the beginning and left him in the hand of his own counsel." Now it is evident that man is ordained to something as his end: since man is not the supreme good. Therefore the last end of man's reason and will cannot be the preservation of man's being.
Secondly, because, granted that the end of man's will and reason be the preservation of man's being, it could not be said that the end of man is some good of the body. For man's being consists in soul and body; and though the being of the body depends on the soul, yet the being of the human soul depends not on the body, as shown above (I 75,2); and the very body is for the soul, as matter for its form, and the instruments for the man that puts them into motion, that by their means he may do his work. Wherefore all goods of the body are ordained to the goods of the soul, as to their end. Consequently happiness, which is man's last end, cannot consist in goods of the body.
Reply to Objection: 1. Just as the body is ordained to the soul, as its end, so are external goods ordained to the body itself. And therefore it is with reason that the good of the body is preferred to external goods, which are signified by "riches," just as the good of the soul is preferred to all bodily goods.
2. Being taken simply, as including all perfection of being, surpasses life and all that follows it; for thus being itself includes all these. And in this sense Dionysius speaks. But if we consider being itself as participated in this or that thing, which does not possess the whole perfection of being, but has imperfect being, such as the being of any creature; then it is evident that being itself together with an additional perfection is more excellent. Hence in the same passage Dionysius says that things that live are better than things that exist, and intelligent better than living things.
3. Since the end corresponds to the beginning; this argument proves that the last end is the first beginning of being, in Whom every perfection of being is: Whose likeness, according to their proportion, some desire as to being only, some as to living being, some as to being which is living, intelligent and happy. And this belongs to few.
Objection: 1. It would seem that man's happiness consists in pleasure. For since happiness is the last end, it is not desired for something else, but other things for it. But this answers to pleasure more than to anything else: "for it is absurd to ask anyone what is his motive in wishing to be pleased" (Ethic. x, 2). Therefore happiness consists principally in pleasure and delight.
2. Further, "the first cause goes more deeply into the effect than the second cause" (De Causis i). Now the causality of the end consists in its attracting the appetite. Therefore, seemingly that which moves most the appetite, answers to the notion of the last end. Now this is pleasure: and a sign of this is that delight so far absorbs man's will and reason, that it causes him to despise other goods. Therefore it seems that man's last end, which is happiness, consists principally in pleasure.
3. Further, since desire is for good, it seems that what all desire is best. But all desire delight; both wise and foolish, and even irrational creatures. Therefore delight is the best of all. Therefore happiness, which is the supreme good, consists in pleasure.
On the contrary Boethius says (De Consol. iii): "Any one that chooses to look back on his past excesses, will perceive that pleasures had a sad ending: and if they can render a man happy, there is no reason why we should not say that the very beasts are happy too."
I answer that Because bodily delights are more generally known, "the name of pleasure has been appropriated to them" (Ethic. vii, 13), although other delights excel them: and yet happiness does not consist in them. Because in every thing, that which pertains to its essence is distinct from its proper accident: thus in man it is one thing that he is a mortal rational animal, and another that he is a risible animal. We must therefore consider that every delight is a proper accident resulting from happiness, or from some part of happiness; since the reason that a man is delighted is that he has some fitting good, either in reality, or in hope, or at least in memory. Now a fitting good, if indeed it be the perfect good, is precisely man's happiness: and if it is imperfect, it is a share of happiness, either proximate, or remote, or at least apparent. Therefore it is evident that neither is delight, which results from the perfect good, the very essence of happiness, but something resulting therefrom as its proper accident.But bodily pleasure cannot result from the perfect good even in that way. For it results from a good apprehended by sense, which is a power of the soul, which power makes use of the body. Now good pertaining to the body, and apprehended by sense, cannot be man's perfect good. For since the rational soul excels the capacity of corporeal matter, that part of the soul which is independent of a corporeal organ, has a certain infinity in regard to the body and those parts of the soul which are tied down to the body: just as immaterial things are in a way infinite as compared to material things, since a form is, after a fashion, contracted and bounded by matter, so that a form which is independent of matter is, in a way, infinite. Therefore sense, which is a power of the body, knows the singular, which is determinate through matter: whereas the intellect, which is a power independent of matter, knows the universal, which is abstracted from matter, and contains an infinite number of singulars. Consequently it is evident that good which is fitting to the body, and which causes bodily delight through being apprehended by sense, is not man's perfect good, but is quite a trifle as compared with the good of the soul. Hence it is written (Sg 7,9) that "all gold in comparison of her, is as a little sand." And therefore bodily pleasure is neither happiness itself, nor a proper accident of happiness.
Reply to Objection: 1. It comes to the same whether we desire good, or desire delight, which is nothing else than the appetite's rest in good: thus it is owing to the same natural force that a weighty body is borne downwards and that it rests there. Consequently just as good is desired for itself, so delight is desired for itself and not for anything else, if the preposition "for" denote the final cause. But if it denote the formal or rather the motive cause, thus delight is desirable for something else, i.e. for the good, which is the object of that delight, and consequently is its principle, and gives it its form: for the reason that delight is desired is that it is rest in the thing desired.2. The vehemence of desire for sensible delight arises from the fact that operations of the senses, through being the principles of our knowledge, are more perceptible. And so it is that sensible pleasures are desired by the majority.3. All desire delight in the same way as they desire good: and yet they desire delight by reason of the good and not conversely, as stated above (ad 1). Consequently it does not follow that delight is the supreme and essential good, but that every delight results from some good, and that some delight results from that which is the essential and supreme good.
Objection: 1. It would seem that some good of the soul constitutes man's happiness. For happiness is man's good. Now this is threefold: external goods, goods of the body, and goods of the soul. But happiness does not consist in external goods, nor in goods of the body, as shown above (Articles ,5). Therefore it consists in goods of the soul.
2. Further, we love that for which we desire good, more than the good that we desire for it: thus we love a friend for whom we desire money, more than we love money. But whatever good a man desires, he desires it for himself. Therefore he loves himself more than all other goods. Now happiness is what is loved above all: which is evident from the fact that for its sake all else is loved and desired. Therefore happiness consists in some good of man himself: not, however, in goods of the body; therefore, in goods of the soul.
3. Further, perfection is something belonging to that which is perfected. But happiness is a perfection of man. Therefore happiness is something belonging to man. But it is not something belonging to the body, as shown above (Article ). Therefore it is something belonging to the soul; and thus it consists in goods of the soul.
On the contrary As Augustine says (De Doctr. Christ. i, 22), "that which constitutes the life of happiness is to be loved for its own sake." But man is not to be loved for his own sake, but whatever is in man is to be loved for God's sake. Therefore happiness consists in no good of the soul.
I answer that As stated above (Question , Article ), the end is twofold: namely, the thing itself, which we desire to attain, and the use, namely, the attainment or possession of that thing. If, then, we speak of man's last end, it is impossible for man's last end to be the soul itself or something belonging to it. Because the soul, considered in itself, is as something existing in potentiality: for it becomes knowing actually, from being potentially knowing; and actually virtuous, from being potentially virtuous. Now since potentiality is for the sake of act as for its fulfilment, that which in itself is in potentiality cannot be the last end. Therefore the soul itself cannot be its own last end.In like manner neither can anything belonging to it, whether power, habit, or act. For that good which is the last end, is the perfect good fulfilling the desire. Now man's appetite, otherwise the will, is for the universal good. And any good inherent to the soul is a participated good, and consequently a portioned good. Therefore none of them can be man's last end.But if we speak of man's last end, as to the attainment or possession thereof, or as to any use whatever of the thing itself desired as an end, thus does something of man, in respect of his soul, belong to his last end: since man attains happiness through his soul. Therefore the thing itself which is desired as end, is that which constitutes happiness, and makes man happy; but the attainment of this thing is called happiness. Consequently we must say that happiness is something belonging to the soul; but that which constitutes happiness is something outside the soul.
Reply to Objection: 1. Inasmuch as this division includes all goods that man can desire, thus the good of the soul is not only power, habit, or act, but also the object of these, which is something outside. And in this way nothing hinders us from saying that what constitutes happiness is a good of the soul.
2. As far as the proposed objection is concerned, happiness is loved above all, as the good desired; whereas a friend is loved as that for which good is desired; and thus, too, man loves himself. Consequently it is not the same kind of love in both cases. As to whether man loves anything more than himself with the love of friendship there will be occasion to inquire when we treat of Charity.
3. Happiness, itself, since it is a perfection of the soul, is an inherent good of the soul; but that which constitutes happiness, viz. which makes man happy, is something outside his soul, as stated above.
Objection: 1. It would seem that some created good constitutes man's happiness. For Dionysius says (Div. Nom. vii) that Divine wisdom "unites the ends of first things to the beginnings of second things," from which we may gather that the summit of a lower nature touches the base of the higher nature. But man's highest good is happiness. Since then the angel is above man in the order of nature, as stated in I 111,1, it seems that man's happiness consists in man somehow reaching the angel.
2. Further, the last end of each thing is that which, in relation to it, is perfect: hence the part is for the whole, as for its end. But the universe of creatures which is called the macrocosm, is compared to man who is called the microcosm (Phys. viii, 2), as perfect to imperfect. Therefore man's happiness consists in the whole universe of creatures.
3. Further, man is made happy by that which lulls his natural desire. But man's natural desire does not reach out to a good surpassing his capacity. Since then man's capacity does not include that good which surpasses the limits of all creation, it seems that man can be made happy by some created good. Consequently some created good constitutes man's happiness.
On the contrary Augustine says (De Civ. Dei xix, 26): "As the soul is the life of the body, so God is man's life of happiness: of Whom it is written: 'Happy is that people whose God is the Lord' (Ps 143,15)."
I answer that It is impossible for any created good to constitute man's happiness. For happiness is the perfect good, which lulls the appetite altogether; else it would not be the last end, if something yet remained to be desired. Now the object of the will, i.e. of man's appetite, is the universal good; just as the object of the intellect is the universal true. Hence it is evident that naught can lull man's will, save the universal good. This is to be found, not in any creature, but in God alone; because every creature has goodness by participation. Wherefore God alone can satisfy the will of man, according to the words of Ps 102,5: "Who satisfieth thy desire with good things." Therefore God alone constitutes man's happiness.
Reply to Objection: 1. The summit of man does indeed touch the base of the angelic nature, by a kind of likeness; but man does not rest there as in his last end, but reaches out to the universal fount itself of good, which is the common object of happiness of all the blessed, as being the infinite and perfect good.
2. If a whole be not the last end, but ordained to a further end, then the last end of a part thereof is not the whole itself, but something else. Now the universe of creatures, to which man is compared as part to whole, is not the last end, but is ordained to God, as to its last end. Therefore the last end of man is not the good of the universe, but God himself.
3. Created good is not less than that good of which man is capable, as of something intrinsic and inherent to him: but it is less than the good of which he is capable, as of an object, and which is infinite. And the participated good which is in an angel, and in the whole universe, is a finite and restricted good.
We have now to consider (1) what happiness is, and (2) what things are required for it.
Concerning the first there are eight points of inquiry:
(1) Whether happiness is something uncreated?
(2) If it be something created, whether it is an operation?
(3) Whether it is an operation of the sensitive, or only of the intellectual part?
(4) If it be an operation of the intellectual part, whether it is an operation of the intellect, or of the will?
(5) If it be an operation of the intellect, whether it is an operation of the speculative or of the practical intellect?
(6) If it be an operation of the speculative intellect, whether it consists in the consideration of speculative sciences?
(7) Whether it consists in the consideration of separate substances viz. angels?
(8) Whether it consists in the sole contemplation of God seen in His Essence?
Objection: 1. It would seem that happiness is something uncreated. For Boethius says (De Consol. iii): "We must needs confess that God is happiness itself."
2. Further, happiness is the supreme good. But it belongs to God to be the supreme good. Since, then, there are not several supreme goods, it seems that happiness is the same as God.
3. Further, happiness is the last end, to which man's will tends naturally. But man's will should tend to nothing else as an end, but to God, Who alone is to be enjoyed, as Augustine says (De Doctr. Christ. i, 5,22). Therefore happiness is the same as God.
On the contrary Nothing made is uncreated. But man's happiness is something made; because according to Augustine (De Doctr. Christ. i, 3): "Those things are to be enjoyed which make us happy." Therefore happiness is not something uncreated.
I answer that As stated above (Question , Article ; Question , Article ), our end is twofold. First, there is the thing itself which we desire to attain: thus for the miser, the end is money. Secondly there is the attainment or possession, the use or enjoyment of the thing desired; thus we may say that the end of the miser is the possession of money; and the end of the intemperate man is to enjoy something pleasurable. In the first sense, then, man's last end is the uncreated good, namely, God, Who alone by His infinite goodness can perfectly satisfy man's will. But in the second way, man's last end is something created, existing in him, and this is nothing else than the attainment or enjoyment of the last end. Now the last end is called happiness. If, therefore, we consider man's happiness in its cause or object, then it is something uncreated; but if we consider it as to the very essence of happiness, then it is something created.
Reply to Objection: 1. God is happiness by His Essence: for He is happy not by acquisition or participation of something else, but by His Essence. On the other hand, men are happy, as Boethius says (De Consol. iii), by participation; just as they are called "gods," by participation. And this participation of happiness, in respect of which man is said to be happy, is something created.
2. Happiness is called man's supreme good, because it is the attainment or enjoyment of the supreme good.
3. Happiness is said to be the last end, in the same way as the attainment of the end is called the end.
Objection: 1. It would seem that happiness is not an operation. For the Apostle says (Rm 6,22): "You have your fruit unto sanctification, and the end, life everlasting." But life is not an operation, but the very being of living things. Therefore the last end, which is happiness, is not an operation.
2. Further, Boethius says (De Consol. iii) that happiness is "a state made perfect by the aggregate of all good things." But state does not indicate operation. Therefore happiness is not an operation.
3. Further, happiness signifies something existing in the happy one: since it is man's final perfection. But the meaning of operation does not imply anything existing in the operator, but rather something proceeding therefrom. Therefore happiness is not an operation.
4. Further, happiness remains in the happy one. Now operation does not remain, but passes. Therefore happiness is not an operation.
5. Further, to one man there is one happiness. But operations are many. Therefore happiness is not an operation.
6. Further, happiness is in the happy one uninterruptedly. But human operation is often interrupted; for instance, by sleep, or some other occupation, or by cessation. Therefore happiness is not an operation.
On the contrary The Philosopher says (Ethic. i, 13) that "happiness is an operation according to perfect virtue."
I answer that In so far as man's happiness is something created, existing in him, we must needs say that it is an operation. For happiness is man's supreme perfection. Now each thing is perfect in so far as it is actual; since potentiality without act is imperfect. Consequently happiness must consist in man's last act. But it is evident that operation is the last act of the operator, wherefore the Philosopher calls it "second act" (De Anima ii, 1): because that which has a form can be potentially operating, just as he who knows is potentially considering. And hence it is that in other things, too, each one is said to be "for its operation" (De Coel ii, 3). Therefore man's happiness must of necessity consist in an operation.
Reply to Objection: 1. Life is taken in two senses. First for the very being of the living. And thus happiness is not life: since it has been shown (Question , Article ) that the being of a man, no matter in what it may consist, is not that man's happiness; for of God alone is it true that His Being is His Happiness. Secondly, life means the operation of the living, by which operation the principle of life is made actual: thus we speak of active and contemplative life, or of a life of pleasure. And in this sense eternal life is said to be the last end, as is clear from Jn 17,3: "This is eternal life, that they may know Thee, the only true God."
2. Boethius, in defining happiness, considered happiness in general: for considered thus it is the perfect common good; and he signified this by saying that happiness is "a state made perfect by the aggregate of all good things," thus implying that the state of a happy man consists in possessing the perfect good. But Aristotle expressed the very essence of happiness, showing by what man is established in this state, and that it is by some kind of operation. And so it is that he proves happiness to be "the perfect good" (Ethic. i, 7).
3. As stated in Metaph. ix, 7 action is twofold. One proceeds from the agent into outward matter, such as "to burn" and "to cut." And such an operation cannot be happiness: for such an operation is an action and a perfection, not of the agent, but rather of the patient, as is stated in the same passage. The other is an action that remains in the agent, such as to feel, to understand, and to will: and such an action is a perfection and an act of the agent. And such an operation can be happiness.
4. Since happiness signifies some final perfection; according as various things capable of happiness can attain to various degrees of perfection, so must there be various meanings applied to happiness. For in God there is happiness essentially; since His very Being is His operation, whereby He enjoys no other than Himself. In the happy angels, the final perfection is in respect of some operation, by which they are united to the Uncreated Good: and this operation of theirs is one only and everlasting. But in men, according to their present state of life, the final perfection is in respect of an operation whereby man is united to God: but this operation neither can be continual, nor, consequently, is it one only, because operation is multiplied by being discontinued. And for this reason in the present state of life, perfect happiness cannot be attained by man. Wherefore the Philosopher, in placing man's happiness in this life (Ethic. i, 10), says that it is imperfect, and after a long discussion, concludes: "We call men happy, but only as men." But God has promised us perfect happiness, when we shall be "as the angels . . . in heaven" (Mt 22,30).Consequently in regard to this perfect happiness, the objection fails: because in that state of happiness, man's mind will be united to God by one, continual, everlasting operation. But in the present life, in as far as we fall short of the unity and continuity of that operation so do we fall short of perfect happiness. Nevertheless it is a participation of happiness: and so much the greater, as the operation can be more continuous and more one. Consequently the active life, which is busy with many things, has less of happiness than the contemplative life, which is busied with one thing, i.e. the contemplation of truth. And if at any time man is not actually engaged in this operation, yet since he can always easily turn to it, and since he ordains the very cessation, by sleeping or occupying himself otherwise, to the aforesaid occupation, the latter seems, as it were, continuous.
5. From these remarks the replies to Objections 5 and 6 are evident.
Summa Th. I-II EN Qu.2 a.2