Whether cruelty differs from savagery or brutality?

Objections

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.
Objection 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 (Article [1], ad 1). Therefore cruelty is the same as savagery.
Objection 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.