A Topic of Moral Theology
Defence of others
Killing or maiming an assailant in another's defence.
The works themselves ask 2 questions under this heading — see them together with their answers.
Also asked about as…
defending others · protecting my family · stopping an attacker (ed.)
In the index as Unjust aggressor · Goods · Killing of self · Moderation of blameless defense · Modesty · Defense · Embryotomy · Homicide · Nuns · Rape · Violence
In the manuals
Read the manuals side by side → — each work's whole treatment in its own column
A Manual of Moral Theology for English-Speaking Countries
Vol. I, Bk. VI, Pt. V, Chapter III. Justifiable Homicide, n. 4 — What one may lawfully do, that, as a rule, another may help him to do; and so I may kill or maim an unjust assailant not only of my own life, limb, chastity, or property, but when any innocent person is similarly threate… Read in context →
Institutions of Moral Theology (Institutiones Theologiae Moralis)
Vol. I, On the Fifth Precept of th…, III. On the Killing of an Unjust Aggressor, nn. 734 & 735 (2 passages — hover a number to read it)
Summa Theologiae Moralis
Vol. II, Special Moral Theology: On…, Treatise: On the Cardinal …, Third Part: Concerning Com…, Section B: On Justice and …, Ch. I, Question Three: On the Killing of One's Neighbor, nn. 361 & 362 (18 passages — hover a number to read it)
Treated under the broader heading Justifiable Homicide and Self-Defence — Wouters, Manual of Moral Theology · McHugh–Callan, Moral Theology · Bucceroni, Cases of Conscience · Koch–Preuss · Prümmer, Manuale Theologiae Moralis · Rickaby, Moral Philosophy · The Roman Catechism · The Casuist — these works do not divide the matter as finely as we do here, so their treatment stands one heading up (ed.)