Letter 2
Be always thinking of these things, and break in pieces the sharp sword of the Evil One, by means of which he destroys many. And this is despair, which cuts off from hope those who have been overthrown. This is the strong weapon of the enemy, and the only way in which he holds down those who have been made captives is by binding them with this chain, which, if we choose, we shall speedily be able to break by the grace of God. I know that I have exceeded the due measure of a letter, but forgive me; for I am not willingly in this condition, but have been constrained by my love and sorrow, owing to which I forced myself to write this letter also, although many would have prevented me.
“Cease labouring in vain and sowing upon rock” many have been saying to me. But I hearkened to none of them. For there is hope I said to myself that, God willing, my letter will accomplish something; but if that which we deprecate should take place, we shall at least have the advantage of escaping self reproach for keeping silence, and we shall not be worse than sailors on the sea, who, when they behold men of their own craft drifting on a plank, because their ship has been broken to pieces by the winds and waves, take down their sails, and cast anchor, and get into a boat and try to rescue the men, although strangers, known to them only in consequence of their calamity.
But if the others were unwilling to be rescued no one would accuse those of their destruction who attempted to save them. This is what we offer; but we trust that by the grace of God you also will do your part, and we shall again see you occupying an eminent place in the flock of Christ. In answer to the prayers of the saints may we speedily receive you back, dear friend, sound in the true health. If you have any regard for us, and hast not utterly cast us out of your memory, please vouchsafe a reply to our letter; for in so doing you will give us much pleasure.
Source: Two Letters to Theodore After His Fall (New Advent)