Thomas Aquinas - Summa Theologica, Part II-II (Secunda Secundae)

Obj. 3: Further, it is written (Matt. 7:12): "Whatsoever you would that men should do to you, do you also to them": and we ought to observe this in all our dealings with our neighbor. Now our enemy is our neighbor. Therefore, since no man wishes ambushes or deceptions to be prepared for himself, it seems that no one ought to carry on war by laying ambushes.

On the contrary, Augustine says (QQ. in Hept. qu. x super Jos): "Provided the war be just, it is no concern of justice whether it be carried on openly or by ambushes": and he proves this by the authority of the Lord, Who commanded Joshua to lay ambushes for the city of Hai (Joshua 8:2).

I answer that, The object of laying ambushes is in order to deceive the enemy. Now a man may be deceived by another's word or deed in two ways. First, through being told something false, or through the breaking of a promise, and this is always unlawful. No one ought to deceive the enemy in this way, for there are certain "rights of war and covenants, which ought to be observed even among enemies," as Ambrose states (De Officiis i).

Secondly, a man may be deceived by what we say or do, because we do not declare our purpose or meaning to him. Now we are not always bound to do this, since even in the Sacred Doctrine many things have to be concealed, especially from unbelievers, lest they deride it, according to Matt. 7:6: "Give not that which is holy, to dogs." Wherefore much more ought the plan of campaign to be hidden from the enemy. For this reason among other things that a soldier has to learn is the art of concealing his purpose lest it come to the enemy's knowledge, as stated in the Book on Strategy [*Stratagematum i, 1] by Frontinus. Such like concealment is what is meant by an ambush which may be lawfully employed in a just war.

Nor can these ambushes be properly called deceptions, nor are they contrary to justice or to a well-ordered will. For a man would have an inordinate will if he were unwilling that others should hide anything from him.

This suffices for the Replies to the Objections. _______________________

FOURTH ARTICLE [II-II, Q. 40, Art. 4]

Whether It Is Lawful to Fight on Holy Days?

Objection 1: It would seem unlawful to fight on holy days. For holy days are instituted that we may give our time to the things of God. Hence they are included in the keeping of the Sabbath prescribed Ex. 20:8: for "sabbath" is interpreted "rest." But wars are full of unrest. Therefore by no means is it lawful to fight on holy days.

Obj. 2: Further, certain persons are reproached (Isa. 58:3) because on fast-days they exacted what was owing to them, were guilty of strife, and of smiting with the fist. Much more, therefore, is it unlawful to fight on holy days.

Obj. 3: Further, no ill deed should be done to avoid temporal harm.

But fighting on a holy day seems in itself to be an ill deed.

Therefore no one should fight on a holy day even through the need of

avoiding temporal harm.

On the contrary, It is written (1 Mac. 2:41): The Jews rightly determined . . . saying: "Whosoever shall come up against us to fight on the Sabbath-day, we will fight against him."

I answer that, The observance of holy days is no hindrance to those things which are ordained to man's safety, even that of his body. Hence Our Lord argued with the Jews, saying (John 7:23): "Are you angry at Me because I have healed the whole man on the Sabbath-day?" Hence physicians may lawfully attend to their patients on holy days. Now there is much more reason for safeguarding the common weal (whereby many are saved from being slain, and innumerable evils both temporal and spiritual prevented), than the bodily safety of an individual. Therefore, for the purpose of safeguarding the common weal of the faithful, it is lawful to carry on a war on holy days, provided there be need for doing so: because it would be to tempt God, if notwithstanding such a need, one were to choose to refrain from fighting.

However, as soon as the need ceases, it is no longer lawful to fight on a holy day, for the reasons given: wherefore this suffices for the Replies to the Objections.

[*Strife here denotes fighting between individuals]

We must now consider strife, under which head there are two points of inquiry:

(1) Whether strife is a sin?

(2) Whether it is a daughter of anger? _______________________

FIRST ARTICLE [II-II, Q. 41, Art. 1]

Whether Strife Is Always a Sin?

Objection 1: It would seem that strife is not always a sin. For strife seems a kind of contention: hence Isidore says (Etym. x) that the word "rixosus [quarrelsome] is derived from the snarling [rictu] of a dog, because the quarrelsome man is ever ready to contradict; he delights in brawling, and provokes contention." Now contention is not always a sin. Neither, therefore, is strife.

Obj. 2: Further, it is related (Gen. 26:21) that the servants of

Isaac "digged" another well, "and for that they quarrelled likewise."

Now it is not credible that the household of Isaac quarrelled

publicly, without being reproved by him, supposing it were a sin.

Therefore strife is not a sin.

Obj. 3: Further, strife seems to be a war between individuals. But war is not always sinful. Therefore strife is not always a sin.

On the contrary, Strifes [*The Douay version has 'quarrels'] are reckoned among the works of the flesh (Gal. 5:20), and "they who do such things shall not obtain the kingdom of God." Therefore strifes are not only sinful, but they are even mortal sins.

I answer that, While contention implies a contradiction of words, strife denotes a certain contradiction of deeds. Wherefore a gloss on Gal. 5:20 says that "strifes are when persons strike one another through anger." Hence strife is a kind of private war, because it takes place between private persons, being declared not by public authority, but rather by an inordinate will. Therefore strife is always sinful. In fact it is a mortal sin in the man who attacks another unjustly, for it is not without mortal sin that one inflicts harm on another even if the deed be done by the hands. But in him who defends himself, it may be without sin, or it may sometimes involve a venial sin, or sometimes a mortal sin; and this depends on his intention and on his manner of defending himself. For if his sole intention be to withstand the injury done to him, and he defend himself with due moderation, it is no sin, and one cannot say properly that there is strife on his part. But if, on the other hand, his self-defense be inspired by vengeance and hatred, it is always a sin. It is a venial sin, if a slight movement of hatred or vengeance obtrude itself, or if he does not much exceed moderation in defending himself: but it is a mortal sin if he makes for his assailant with the fixed intention of killing him, or inflicting grievous harm on him.

Reply Obj. 1: Strife is not just the same as contention: and there are three things in the passage quoted from Isidore, which express the inordinate nature of strife. First, the quarrelsome man is always ready to fight, and this is conveyed by the words, "ever ready to contradict," that is to say, whether the other man says or does well or ill. Secondly, he delights in quarrelling itself, and so the passage proceeds, "and delights in brawling." Thirdly, "he" provokes others to quarrel, wherefore it goes on, "and provokes contention."

Reply Obj. 1: The sense of the text is not that the servants of Isaac quarrelled, but that the inhabitants of that country quarrelled with them: wherefore these sinned, and not the servants of Isaac, who bore the calumny [*Cf. Gen. 26:20].

Reply Obj. 3: In order for a war to be just it must be declared by authority of the governing power, as stated above (Q. 40, A. 1); whereas strife proceeds from a private feeling of anger or hatred. For if the servants of a sovereign or judge, in virtue of their public authority, attack certain men and these defend themselves, it is not the former who are said to be guilty of strife, but those who resist the public authority. Hence it is not the assailants in this case who are guilty of strife and commit sin, but those who defend themselves inordinately. _______________________