Letters

⁶ Think, then, of this first of all, when you are arming for the battle, that even your bodily strength is a gift of God; for, considering this, you will not employ the gift of God against God. For, when faith is pledged, it is to be kept even with the enemy against whom the war is waged, how much more with the friend for whom the battle is fought! Peace should be the object of your desire; war should be waged only as a necessity, and waged only that God may by it deliver men from the necessity and preserve them in peace.

For peace is not sought in order to the kindling of war, but war is waged in order that peace may be obtained. Therefore, even in waging war, cherish the spirit of a peacemaker, that, by conquering those whom you attack, you may lead them back to the advantages of peace; for our Lord says: “Blessed are the peacemakers; for they shall be called the children of God.” If, however, peace among men be so sweet as procuring temporal safety, how much sweeter is that peace with God which procures for men the eternal felicity of the angels!

Let necessity, therefore, and not your will, slay the enemy who fights against you. As violence is used towards him who rebels and resists, so mercy is due to the vanquished or the captive, especially in the case in which future troubling of the peace is not to be feared.