Whether theft and robbery are sins of different species?

❌ Objection 1 : It would seem that theft and robbery are not sins of different species. For theft and robbery differ as "secret" and "manifest": because theft is taking something secretly, while robbery is to take something violently and openly. Now in the other kinds of sins, the secret and the manifest do not differ specifically. Therefore theft and robbery are not different species of sin.

❌ Objection 2 : Further, moral actions take their species from the end, as stated above (FS, Question [1], Article [3]; Question [18], Article [6]). Now theft and robbery are directed to the same end, viz. the possession of another's property. Therefore they do not differ specifically.

❌ Objection 3 : Further, just as a thing is taken by force for the sake of possession, so is a woman taken by force for pleasure: wherefore Isidore says (Etym. x) that "he who commits a rape is called a corrupter, and the victim of the rape is said to be corrupted." Now it is a case of rape whether the woman be carried off publicly or secretly. Therefore the thing appropriated is said to be taken by force, whether it be done secretly or publicly. Therefore theft and robbery do not differ.