Question — Bontempi, Palladium Theologicum V · from Schola Thomistica
Question VII: On guile
Deceit is, when one thing is done and another feigned, as St. Bonaventure says on that passage of John 1. In which there is no deceit. To be deceitful is said to be to have two hearts, as the Psalmist says: They spoke in heart, and heart.
De DOLO.
Dolus est, cum aliud agitur, aliud fingitur, ut ait S. Bonav. ad id Ioan. 1. In quo dolus non est. Dolosus dicitur, duo corda habere, ut ait Psalmista: In corde, et corde locuti sunt.
Deceit is also a kind of execution of Craftiness, now by words, according to Psal. 5. With their tongues they dealt deceitfully; now by deeds, according to Psal. 105. That they might work deceit against his servants. For Craftiness meditates deceits, as is said Psal. 37. and Eccles. 19.
Dolus est etiam executio quaedam Astutiae, tum per verba, iuxta id Psal. 5. Linguis suis dolose agebant; tum per facta, iuxta id Psal. 105. Ut dolum facerent in servis eius. Astutia enim dolos meditatur, ut dicitur Psal. 37. et Eccles. 19.
It can be, either expressed outwardly in speech, as when one contracting betrothal calls himself Peter, though he is called John; or it can be hidden, as when one speaks in such a way as one who simply consents. Thus St. Bonaventure in 4. dist. 17. dub. 2. literal reading.
Hic potest esse, vel expressus foris sermone, sicuti qui sponsalia contrahens, vocaret se Petrum, cum vocaretur Ioannes; vel potest esse occultus, ut cum quis ita loquitur, sicut qui simpliciter consentit. Ita D. Bonav. in 4. dist. 17. dub. 2. litterali.