Whether robbery may be committed without sin?
Objections
❌ Objection 1 : It would seem that robbery may be committed without sin. For spoils are taken by violence, and this seems to belong to the essence of robbery, according to what has been said (Article [4]). Now it is lawful to take spoils from the enemy; for Ambrose says (De Patriarch. 4 [*De Abraham i, 3]): "When the conqueror has taken possession of the spoils, military discipline demands that all should be reserved for the sovereign," in order, to wit, that he may distribute them. Therefore in certain cases robbery is lawful.
❌ Objection 2 : Further, it is lawful to take from a man what is not his. Now the things which unbelievers have are not theirs, for Augustine says (Ep. ad Vincent. Donat. xciii.): "You falsely call things your own, for you do not possess them justly, and according to the laws of earthly kings you are commanded to forfeit them." Therefore it seems that one may lawfully rob unbelievers.
❌ Objection 3 : Further, earthly princes violently extort many things from their subjects: and this seems to savor of robbery. Now it would seem a grievous matter to say that they sin in acting thus, for in that case nearly every prince would be damned. Therefore in some cases robbery is lawful.