OF GLUTTONY (SIX ARTICLES)
We must now consider gluttony. Under this head there are six points of inquiry:
(1) Whether gluttony is a sin?
(2) Whether it is a mortal sin?
(3) Whether it is the greatest of sins?
(4) Its species;
(5) Whether it is a capital sin?
(6) Its daughters.
Whether gluttony is a sin?
Objection 1: It would seem that gluttony is not a sin. For our Lord said ( Mat. 15:11 ): "Not that which goeth into the mouth defileth a man." Now gluttony regards food which goes into a man. Therefore, since every sin defiles a man, it seems that gluttony is not a sin.
Objection 2: Further, "No man sins in what he cannot avoid" [*Ep. lxxi, ad Lucin.]. Now gluttony is immoderation in food; and man cannot avoid this, for Gregory says (Moral. xxx, 18): "Since in eating pleasure and necessity go together, we fail to discern between the call of necessity and the seduction of pleasure," and Augustine says (Confess. x, 31): "Who is it, Lord, that does not eat a little more than necessary?" Therefore gluttony is not a sin.
Objection 3: Further, in every kind of sin the first movement is a sin. But the first movement in taking food is not a sin, else hunger and thirst would be sinful. Therefore gluttony is not a sin.
On the contrary, Gregory says (Moral. xxx, 18) that "unless we first tame the enemy dwelling within us, namely our gluttonous appetite, we have not even stood up to engage in the spiritual combat." But man's inward enemy is sin. Therefore gluttony is a sin.
I answer that, Gluttony denotes, not any desire of eating and drinking, but an inordinate desire. Now desire is said to be inordinate through leaving the order of reason, wherein the good of moral virtue consists: and a thing is said to be a sin through being contrary to virtue. Wherefore it is evident that gluttony is a sin.
Reply to Objection 1: That which goes into man by way of food, by reason of its substance and nature, does not defile a man spiritually. But the Jews, against whom our Lord is speaking, and the Manichees deemed certain foods to make a man unclean, not on account of their signification, but by reason of their nature [*Cf. FS, Q[102], A[6], ad 1]. It is the inordinate desire of food that defiles a man spiritually.
Reply to Objection 2: As stated above, the vice of gluttony does not regard the substance of food, but in the desire thereof not being regulated by reason. Wherefore if a man exceed in quantity of food, not from desire of food, but through deeming it necessary to him, this pertains, not to gluttony, but to some kind of inexperience. It is a case of gluttony only when a man knowingly exceeds the measure in eating, from a desire for the pleasures of the palate.
Reply to Objection 3: The appetite is twofold. There is the natural appetite, which belongs to the powers of the vegetal soul. In these powers virtue and vice are impossible, since they cannot be subject to reason; wherefore the appetitive power is differentiated from the powers of secretion, digestion, and excretion, and to it hunger and thirst are to be referred. Besides this there is another, the sensitive appetite, and it is in the concupiscence of this appetite that the vice of gluttony consists. Hence the first movement of gluttony denotes inordinateness in the sensitive appetite, and this is not without sin.
Whether gluttony is a mortal sin?
Objection 1: It would seem that gluttony is not a mortal sin. For every mortal sin is contrary to a precept of the Decalogue: and this, apparently, does not apply to gluttony. Therefore gluttony is not a mortal sin.
Objection 2: Further, every mortal sin is contrary to charity, as stated above (Q[132], A[3]). But gluttony is not opposed to charity, neither as regards the love of God, nor as regards the love of one's neighbor. Therefore gluttony is never a mortal sin.
Objection 3: Further, Augustine says in a sermon on Purgatory [*Cf. Append. to St. Augustine's works: Serm. civ (xli, de sanctis)]: "Whenever a man takes more meat and drink than is necessary, he should know that this is one of the lesser sins." But this pertains to gluttony. Therefore gluttony is accounted among the lesser, that is to say venial, sins.
Objection 4: On the contrary, Gregory says (Moral. xxx, 18): "As long as the vice of gluttony has a hold on a man, all that he has done valiantly is forfeited by him: and as long as the belly is unrestrained, all virtue comes to naught." But virtue is not done away save by mortal sin. Therefore gluttony is a mortal sin.
I answer that, As stated above (A[1]), the vice of gluttony properly consists in inordinate concupiscence. Now the order of reason in regulating the concupiscence may be considered from two points of view. First, with regard to things directed to the end, inasmuch as they may be incommensurate and consequently improportionate to the end; secondly, with regard to the end itself, inasmuch as concupiscence turns man away from his due end. Accordingly, if the inordinate concupiscence in gluttony be found to turn man away from the last end, gluttony will be a mortal sin. This is the case when he adheres to the pleasure of gluttony as his end, for the sake of which he contemns God, being ready to disobey God's commandments, in order to obtain those pleasures. On the other hand, if the inordinate concupiscence in the vice of gluttony be found to affect only such things as are directed to the end, for instance when a man has too great a desire for the pleasures of the palate, yet would not for their sake do anything contrary to God's law, it is a venial sin.
Reply to Objection 1: The vice of gluttony becomes a mortal sin by turning man away from his last end: and accordingly, by a kind of reduction, it is opposed to the precept of hallowing the sabbath, which commands us to rest in our last end. For mortal sins are not all directly opposed to the precepts of the Decalogue, but only those which contain injustice: because the precepts of the Decalogue pertain specially to justice and its parts, as stated above (Q[122], A[1]).
Reply to Objection 2: In so far as it turns man away from his last end, gluttony is opposed to the love of God, who is to be loved, as our last end, above all things: and only in this respect is gluttony a mortal sin.