---
title: "Summa Theologica, First Half"
author: "Thomas Aquinas"
translator: "Fathers of the English Dominican Province"
languages: [en]
shelf: "Medieval"
section: 1012 of 1210
url: https://scriptura.si/works/thomas-aquinas-summa-theologica-first-half/1012/
cite: "Thomas Aquinas, tr. Fathers of the English Dominican Province, Summa Theologica, First Half, section 1012. Scriptura (scriptura.si), https://scriptura.si/works/thomas-aquinas-summa-theologica-first-half/1012/"
---

# Summa Theologica, First Half

*Thomas Aquinas, tr. Fathers of the English Dominican Province*

God and creation, human action, law and grace, then faith, hope, charity and justice.

## 1012. II–II · Q. 55, Art. 1: Whether prudence of the flesh is a sin?

Source: https://scriptura.si/works/thomas-aquinas-summa-theologica-first-half/1012/ · cite a paragraph as https://scriptura.si/works/thomas-aquinas-summa-theologica-first-half/1012/#p-N

[¶0] Whether prudence of the flesh is a sin?

[¶1] Objection 1: It would seem that prudence of the flesh is not a sin. For prudence is more excellent than the other moral virtues, since it governs them all. But no justice or temperance is sinful. Neither therefore is any prudence a sin.

[¶2] Objection 2: Further, it is not a sin to act prudently for an end which it is lawful to love. But it is lawful to love the flesh, "for no man ever hated his own flesh" (Eph. 5:29). Therefore prudence of the flesh is not a sin.

[¶3] Objection 3: Further, just as man is tempted by the flesh, so too is he tempted by the world and the devil. But no prudence of the world, or of the devil is accounted a sin. Therefore neither should any prudence of the flesh be accounted among sins.

[¶4] On the contrary, No man is an enemy to God save for wickedness according to Wis. 14:9, "To God the wicked and his wickedness are hateful alike." Now it is written (Rom. 8:7): "The prudence [Vulg.: 'wisdom'] of the flesh is an enemy to God." Therefore prudence of the flesh is a sin.

[¶5] I answer that, As stated above (Q 47, A 13), prudence regards things which are directed to the end of life as a whole. Hence prudence of the flesh signifies properly the prudence of a man who looks upon carnal goods as the last end of his life. Now it is evident that this is a sin, because it involves a disorder in man with respect to his last end, which does not consist in the goods of the body, as stated above (FS, Q 2, A 5). Therefore prudence of the flesh is a sin.

[¶6] Reply to Objection 1: Justice and temperance include in their very nature that which ranks them among the virtues, viz. equality and the curbing of concupiscence; hence they are never taken in a bad sense. On the other hand prudence is so called from foreseeing [providendo], as stated above (Q 47, A 1; Q 49, A 6), which can extend to evil things also. Therefore, although prudence is taken simply in a good sense, yet, if something be added, it may be taken in a bad sense: and it is thus that prudence of the flesh is said to be a sin.

[¶7] Reply to Objection 2: The flesh is on account of the soul, as matter is on account of the form, and the instrument on account of the principal agent. Hence the flesh is loved lawfully, if it be directed to the good of the soul as its end. If, however, a man place his last end in a good of the flesh, his love will be inordinate and unlawful, and it is thus that the prudence of the flesh is directed to the love of the flesh.

[¶8] Reply to Objection 3: The devil tempts us, not through the good of the appetible object, but by way of suggestion. Wherefore, since prudence implies direction to some appetible end, we do not speak of "prudence of the devil," as of a prudence directed to some evil end, which is the aspect under which the world and the flesh tempt us, in so far as worldly or carnal goods are proposed to our appetite. Hence we speak of "carnal" and again of "worldly" prudence, according to Lk. 16:8, "The children of this world are more prudent [Douay: 'wiser'] in their generation," etc. The Apostle includes all in the "prudence of the flesh," because we covet the external things of the world on account of the flesh.

[¶9] We may also reply that since prudence is in a certain sense called "wisdom," as stated above (Q 47, A 2, ad 1), we may distinguish a threefold prudence corresponding to the three kinds of temptation. Hence it is written (James 3:15) that there is a wisdom which is "earthly, sensual and devilish," as explained above (Q 45, A 1, ad 1), when we were treating of wisdom.

### II–II · Q. 55, Art. 2: Whether prudence of the flesh is a mortal sin?

[¶11] Whether prudence of the flesh is a mortal sin?

[¶12] Objection 1: It would seem that prudence of the flesh is a mortal sin. For it is a mortal sin to rebel against the Divine law, since this implies contempt of God. Now "the prudence [Douay: 'wisdom'] of the flesh . . . is not subject to the law of God" (Rom. 8:7). Therefore prudence of the flesh is a mortal sin.

[¶13] Objection 2: Further, every sin against the Holy Ghost is a mortal sin. Now prudence of the flesh seems to be a sin against the Holy Ghost, for "it cannot be subject to the law of God" (Rom. 8:7), and so it seems to be an unpardonable sin, which is proper to the sin against the Holy Ghost. Therefore prudence of the flesh is a mortal sin.

[¶14] Objection 3: Further, the greatest evil is opposed to the greatest good, as stated in Ethic. viii, 10. Now prudence of the flesh is opposed to that prudence which is the chief of the moral virtues. Therefore prudence of the flesh is chief among mortal sins, so that it is itself a mortal sin.

[¶15] On the contrary, That which diminishes a sin has not of itself the nature of a mortal sin. Now the thoughtful quest of things pertaining to the care of the flesh, which seems to pertain to carnal prudence, diminishes sin [*Cf. Prov. 6:30]. Therefore prudence of the flesh has not of itself the nature of a mortal sin.

[¶16] I answer that, As stated above (Q 47, A 2, ad 1; A 13), a man is said to be prudent in two ways. First, simply, i.e. in relation to the end of life as a whole. Secondly, relatively, i.e. in relation to some particular end; thus a man is said to be prudent in business or something else of the kind. Accordingly if prudence of the flesh be taken as corresponding to prudence in its absolute signification, so that a man place the last end of his whole life in the care of the flesh, it is a mortal sin, because he turns away from God by so doing, since he cannot have several last ends, as stated above (FS, Q 1, A 5).

[¶17] If, on the other hand, prudence of the flesh be taken as corresponding to particular prudence, it is a venial sin. For it happens sometimes that a man has an inordinate affection for some pleasure of the flesh, without turning away from God by a mortal sin; in which case he does not place the end of his whole life in carnal pleasure. To apply oneself to obtain this pleasure is a venial sin and pertains to prudence of the flesh. But if a man actually refers the care of the flesh to a good end, as when one is careful about one's food in order to sustain one's body, this is no longer prudence of the flesh, because then one uses the care of the flesh as a means to an end.

[¶18] Reply to Objection 1: The Apostle is speaking of that carnal prudence whereby a man places the end of his whole life in the goods of the flesh, and this is a mortal sin.

[¶19] Reply to Objection 2: Prudence of the flesh does not imply a sin against the Holy Ghost. For when it is stated that "it cannot be subject to the law of God," this does not mean that he who has prudence of the flesh, cannot be converted and submit to the law of God, but that carnal prudence itself cannot be subject to God's law, even as neither can injustice be just, nor heat cold, although that which is hot may become cold.

[¶20] Reply to Objection 3: Every sin is opposed to prudence, just as prudence is shared by every virtue. But it does not follow that every sin opposed to prudence is most grave, but only when it is opposed to prudence in some very grave matter.