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Summa Theologiae · II-II, q. 55, a. 5

Whether Fraud Pertains to Craftiness?

Thomas Aquinas, Summa Theologiae, Second Part of the Second Part, question 55, Of Vices Opposed to Prudence by Way of Resemblance, article 5. About 2 min.

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Text: Summa Theologiae, Project Gutenberg #18755, Second Part of the Second Part (Secunda Secundae), translated by the Fathers of the English Dominican Province. The Second Part of the Second Part of the Summa in the English Dominican translation (first printed 1911 to 1925; second and revised edition from 1920). A sample check on 2026-11-09 against pre-1931 printings at the Internet Archive (first printings of 1915 and 1916 and the second and revised edition of the 1920s) found that the article text matches, with no 1947 introduction, synopsis, or index. Question and article numbers were added by the transcriber. Rights: Public domain (US)

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Objection 1: It would seem that fraud does not pertain to craftiness. For a man does not deserve praise if he allows himself to be deceived, which is the object of craftiness; and yet a man deserves praise for allowing himself to be defrauded, according to 1 Cor. 6:1, "Why do you not rather suffer yourselves to be defrauded?" Therefore fraud does not belong to craftiness.

Obj. 2: Further, fraud seems to consist in unlawfully taking or receiving external things, for it is written (Acts 5:1) that "a certain man named Ananias with Saphira his wife, sold a piece of land, and by fraud kept back part of the price of the land." Now it pertains to injustice or illiberality to take possession of or retain external things unjustly. Therefore fraud does not belong to craftiness which is opposed to prudence.

Obj. 3: Further, no man employs craftiness against himself. But the frauds of some are against themselves, for it is written (Prov. 1:18) concerning some "that they practice frauds [Douay: 'deceits'] against their own souls." Therefore fraud does not belong to craftiness.

On the contrary, The object of fraud is to deceive, according to Job 13:9, "Shall he be deceived as a man, with your fraudulent [Douay: 'deceitful'] dealings?" Now craftiness is directed to the same object. Therefore fraud pertains to craftiness.

I answer that, Just as guile consists in the execution of craftiness, so also does fraud. But they seem to differ in the fact that guile belongs in general to the execution of craftiness, whether this be effected by words, or by deeds, whereas fraud belongs more properly to the execution of craftiness by deeds.

Reply Obj. 1: The Apostle does not counsel the faithful to be deceived in their knowledge, but to bear patiently the effect of being deceived, and to endure wrongs inflicted on them by fraud.

Reply Obj. 2: The execution of craftiness may be carried out by another vice, just as the execution of prudence by the virtues: and accordingly nothing hinders fraud from pertaining to covetousness or illiberality.

Reply Obj. 3: Those who commit frauds, do not design anything against themselves or their own souls; it is through God's just judgment that what they plot against others, recoils on themselves, according to Ps. 7:16, "He is fallen into the hole he made."

Also online, linked only: the same translation at New Advent and the Latin text at Corpus Thomisticum. Neither is copied here.

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