Thomas Aquinas

“ For it is evident that the greater the good that one has, the greater the excellence that one derives from it. Hence when a man ascribes to himself a good greater than what he has, it follows that his appetite tends to his own excellence in a measure exceeding his competency: and thus we have the third species of pride, namely "boasting of having what one has not." ”

“ Hence the vice opposed to pride by default is akin to the vice of pusillanimity, which is opposed by default to magnanimity. For just as it belongs to magnanimity to urge the mind to great things against despair, so it belongs to humility to withdraw the mind from the inordinate desire of great things against presumption. ”

“ Wherefore aversion from God and His commandments, which is a consequence as it were in other sins, belongs to pride by its very nature, for its act is the contempt of God. And since that which belongs to a thing by its nature is always of greater weight than that which belongs to it through something else, it follows that pride is the most grievous of sins by its genus, because it exceeds in aversion which is the formal complement of sin. ”

“ Opposition between a vice and a virtue is inferred from the object, which is considered on the part of conversion. In this way pride has no claim to be the greatest of sins, as neither has humility to be the greatest of virtues. But it is the greatest on the part of aversion, since it brings greatness upon other sins. For unbelief, by the very fact of its arising out of proud contempt, is rendered more grievous than if it be the outcome of ignorance or weakness. ”

“ Hence it does not follow that all sins are mortal, but only such as arise from perfect pride, which we have stated to be a mortal sin.
Reply to Objection 2: Pride is always contrary to the love of God, inasmuch as the proud man does not subject himself to the Divine rule as he ought. Sometimes it is also contrary to the love of our neighbor; when, namely, a man sets himself inordinately above his neighbor: and this again is a transgression of the Divine rule, which has established order among men, so that one ought to be subject to another. ”

“ Now pride does not observe this rule of right reason, for he esteems himself greater than he is: and this is the outcome of an inordinate desire for his own excellence, since a man is ready to believe what he desires very much, the result being that his appetite is borne towards things higher than what become him. ”

“ Now according to Ambrose [*De Parad. viii] , "every sin is a transgression of the Divine law, and a disobedience of the heavenly commandments." Therefore every sin is pride.
Objection 3: Further, every special sin is opposed to a special virtue. But pride is opposed to all the virtues, for Gregory says (Moral. xxxiv, 23) : "Pride is by no means content with the destruction of one virtue; it raises itself up against all the powers of the soul, and like an all-pervading and poisonous disease corrupts the whole body" ”

“ But on the part of the aversion, pride has extreme gravity, because in other sins man turns away from God, either through ignorance or through weakness, or through desire for any other good whatever; whereas pride denotes aversion from God simply through being unwilling to be subject to God and His rule. ”

“ Consequently if the difficult thing which is the object of pride, were merely some sensible object, whereto the sensitive appetite might tend, pride would have to be in the irascible which is part of the sensitive appetite. But since the difficult thing which pride has in view is common both to sensible and to spiritual things, we must needs say that the subject of pride is the irascible not only strictly so called, as a part of the sensitive appetite, but also in its wider acceptation, as applicable to the intellective appetite. Wherefore pride is ascribed also to the demons. ”

“ Since, however, pride implies a certain elation, it is more directly opposed to humility, even as pusillanimity, which denotes littleness of soul in tending towards great things, is more directly opposed to magnanimity. ”

“ Pride arises from virtue, not as from its direct cause, but as from an accidental cause, in so far as a man makes a virtue an occasion for pride. And nothing prevents one contrary from being the accidental cause of another, as stated in Phys. viii, 1. Hence some are even proud of their humility.
Art. 5 - Whether pride is the most grievous of sins? Objection 1: It would seem that pride is not the most grievous of sins. For the more difficult a sin is to avoid, the less grievous it would seem to be. Now pride is most difficult to avoid ”

“ For just as a wise physician, in order to cure a worse disease, allows the patient to contract one that is less dangerous, so the sin of pride is shown to be more grievous by the very fact that, as a remedy, God allows men to fall into other sins. ”

“ Pride, the queen of vices, when it has vanquished and captured the heart, forthwith delivers it into the hands of its lieutenants the seven principal vices, that they may despoil it and produce vices of all kinds. ”

“ It must, however, be observed that this generic character of pride admits of the possibility of all vices arising from pride sometimes, but it does not imply that all vices originate from pride always. For though one may break the commandments of the Law by any kind of sin, through contempt which pertains to pride, yet one does not always break the Divine commandments through contempt, but sometimes through ignorance. ”

“ Further, it is not a sin to wish to be like unto God: for every creature has a natural desire for this; and especially does this become the rational creature which is made to God's image and likeness. ”

“ The third degree of humility is "not to be easily moved and disposed to laughter," to which is opposed "senseless mirth." The fourth degree of humility is "to maintain silence until one is asked," to which is opposed "boasting". The fifth degree of humility is "to do nothing but to what one is exhorted by the common rule of the monastery," to which is opposed "singularity," whereby a man wishes to seem more holy than others. The sixth degree of humility is "to believe and acknowledge oneself viler than all," to which is opposed "arrogance," whereby a man sets himself above others. ”

“ Just as in syllogisms that lead to an impossible conclusion one is sometimes convinced by being faced with a more evident absurdity, so too, in order to overcome their pride, God punishes certain men by allowing them to fall into sins of the flesh, which though they be less grievous are more evidently shameful. ”

“ Reason has the direction of those things for which man has a natural appetite; so that if the appetite wander from the rule of reason, whether by excess or by default, it will be sinful, as is the case with the appetite for food which man desires naturally. ”

“ Hence no very great gravity attaches to the movement of pride while creeping in secretly, and before it is discovered by the judgment of reason: but once discovered by reason, it is easily avoided, both by considering one's own infirmity, according to Ecclus. 10:9, "Why is earth and ashes proud?" and by considering God's greatness, according to Job 15:13, "Why doth thy spirit swell against God?" as well as by considering the imperfection of the goods on which man prides himself, according to Is. ”

“ A difficulty of this kind in avoiding sin diminishes the gravity of the sin; because a man sins the more grievously, according as he yields to a less impetuous temptation, as Augustine says (De Civ. Dei xiv, 12,15) .
Secondly, it is difficult to avoid a sin, on account of its being hidden. In this way it is difficult to avoid pride, since it takes occasion even from good deeds, as stated (A [5] , ad 3) . Hence Augustine says pointedly that it "lies in wait for good deeds" ”

“ It is in this sense that pride is said to be "love of one's own excellence," inasmuch as love makes a man presume inordinately on his superiority over others, and this belongs properly to pride.
Art. 4 - Whether the four species of pride are fittingly assigned by Gregory? Objection 1: It seems that the four species of pride are unfittingly assigned by Gregory, who says (Moral. xxiii, 6) : "There are four marks by which every kind of pride of the arrogant betrays itself ”