Objection 1: It would seem that cruelty differs not from savagery or brutality. For seemingly one vice is opposed in one way to one virtue. Now both savagery and cruelty are opposed to clemency by way of excess. Therefore it would seem that savagery and cruelty are the same.
Obj. 2: Further, Isidore says (Etym. x) that "severity is as it were savagery with verity, because it holds to justice without attending to piety": so that savagery would seem to exclude that mitigation of punishment in delivering judgment which is demanded by piety. Now this has been stated to belong to cruelty (A. 1, ad 1). Therefore cruelty is the same as savagery.
Obj. 3: Further, just as there is a vice opposed to a virtue by way of excess, so is there a vice opposed to it by way of deficiency, which latter is opposed both to the virtue which is the mean, and to the vice which is in excess. Now the same vice pertaining to deficiency is opposed to both cruelty and savagery, namely remission or laxity. For Gregory says (Moral. xx, 5): "Let there be love, but not that which enervates, let there be severity, but without fury, let there be zeal without unseemly savagery, let there be piety without undue clemency." Therefore savagery is the same as cruelty.
On the contrary, Seneca says (De Clementia ii, 4) that "a man who is angry without being hurt, or with one who has not offended him, is not said to be cruel, but to be brutal or savage."
I answer that, "Savagery" and "brutality" take their names from a likeness to wild beasts which are also described as savage. For animals of this kind attack man that they may feed on his body, and not for some motive of justice the consideration of which belongs to reason alone. Wherefore, properly speaking, brutality or savagery applies to those who in inflicting punishment have not in view a default of the person punished, but merely the pleasure they derive from a man's torture. Consequently it is evident that it is comprised under bestiality: for such like pleasure is not human but bestial, and resulting as it does either from evil custom, or from a corrupt nature, as do other bestial emotions. On the other hand, cruelty not only regards the default of the person punished, but exceeds in the mode of punishing: wherefore cruelty differs from savagery or brutality, as human wickedness differs from bestiality, as stated in Ethic. vii, 5.
Reply Obj. 1: Clemency is a human virtue; wherefore directly opposed to it is cruelty which is a form of human wickedness. But savagery or brutality is comprised under bestiality, wherefore it is directly opposed not to clemency, but to a more excellent virtue, which the Philosopher (Ethic. vii, 5) calls "heroic" or "god-like," which according to us, would seem to pertain to the gifts of the Holy Ghost. Consequently we may say that savagery is directly opposed to the gift of piety.
Reply Obj. 2: A severe man is not said to be simply savage, because this implies a vice; but he is said to be "savage as regards the truth," on account of some likeness to savagery which is not inclined to mitigate punishment.
Reply Obj. 3: Remission of punishment is not a vice, except it disregard the order of justice, which requires a man to be punished on account of his offense, and which cruelty exceeds. On the other hand, cruelty disregards this order altogether. Wherefore remission of punishment is opposed to cruelty, but not to savagery.