1 I have received a letter which I believe to be from you to me: at least I have not thought this incredible, for the person who brought it is one whom I know to be a Catholic Christian, and who, I think, would not dare to impose upon me. But even though the letter may perchance not be from you, I have considered it necessary to write a reply to the author, whoever he may be. You know me now to be more desirous of rest, and earnest in seeking it, than when you knew me in my earlier years at Carthage, in the lifetime of your immediate predecessor Rogatus. But we are precluded from this rest by the Donatists, the repression and correction of whom, by the powers which are ordained of God, appears to me to be labour not in vain. For we already rejoice in the correction of many who hold and defend the Catholic unity with such sincerity, and are so glad to have been delivered from their former error, that we admire them with great thankfulness and pleasure. Yet these same persons, under some indescribable bondage of custom, would in no way have thought of being changed to a better condition, had they not, under the shock of this alarm, directed their minds earnestly to the study of the truth; fearing lest, if without profit, and in vain, they suffered hard things at the hands of men, for the sake not of righteousness, but of their own obstinacy and presumption, they should afterwards receive nothing else at the hand of God than the punishment due to wicked men who despised the admonition which He so gently gave and His paternal correction; and being by such reflection made teachable, they found not in mischievous or frivolous human fables, but in the promises of the divine books, that universal Church which they saw extending according to the promise throughout all nations: just as, on the testimony of prophecy in the same Scriptures, they believed without hesitation that Christ is exalted above the heavens, though He is not seen by them in His glory. Was it my duty to be displeased at the salvation of these men, and to call back my colleagues from a fatherly diligence of this kind, the result of which has been, that we see many blaming their former blindness? For they see that they were blind who believed Christ to have been exalted above the heavens although they saw Him not, and yet denied that His glory is spread over all the earth although they saw it; whereas the prophet has with so great plainness included both in one sentence, “Be exalted, O God, above the heavens, and Your glory above all the earth.”
2. Wherefore, if we were so to overlook and forbear with those cruel enemies who seriously disturb our peace and quietness by manifold and grievous forms of violence and treachery, as that nothing at all should be contrived and done by us with a view to alarm and correct them, truly we would be rendering evil for evil. For if any one saw his enemy running headlong to destroy himself when he had become delirious through a dangerous fever, would he not in that case be much more truly rendering evil for evil if he permitted him to run on thus, than if he took measures to have him seized and bound? And yet he would at that moment appear to the other to be most vexatious, and most like an enemy, when, in truth, he had proved himself most useful and most compassionate; although, doubtless, when health was recovered, would he express to him his gratitude with a warmth proportioned to the measure in which he had felt his refusal to indulge him in his time of phrenzy. Oh, if I could but show you how many we have even from the Circumcelliones, who are now approved Catholics, and condemn their former life, and the wretched delusion under which they believed that they were doing in behalf of the Church of God whatever they did under the promptings of a restless temerity, who nevertheless would not have been brought to this soundness of judgment had they not been, as persons beside themselves, bound with the cords of those laws which are distasteful to you! As to another form of most serious distemper,— that, namely, of those who had not, indeed, a boldness leading to acts of violence, but were pressed down by a kind of inveterate sluggishness of mind, and would say to us: “What you affirm is true, nothing can be said against it; but it is hard for us to leave off what we have received, by tradition from our fathers,”— why should not such persons be shaken up in a beneficial way by a law bringing upon them inconvenience in worldly things, in order that they might rise from their lethargic sleep, and awake to the salvation which is to be found in the unity of the Church? How many of them, now rejoicing with us, speak bitterly of the weight with which their ruinous course formerly oppressed them, and confess that it was our duty to inflict annoyance upon them, in order to prevent them from perishing under the disease of lethargic habit, as under a fatal sleep!
3. You will say that to some these remedies are of no service. Is the art of healing, therefore, to be abandoned, because the malady of some is incurable? You look only to the case of those who are so obdurate that they refuse even such correction. Of such it is written, “In vain have I smitten your children: they received no correction:” and yet I suppose that those of whom the prophet speaks were smitten in love, not from hatred. But you ought to consider also the very large number over whose salvation we rejoice. For if they were only made afraid, and not instructed, this might appear to be a kind of inexcusable tyranny. Again, if they were instructed only, and not made afraid, they would be with more difficulty persuaded to embrace the way of salvation, having become hardened through the inveteracy of custom: whereas many whom we know well, when arguments had been brought before them, and the truth made apparent by testimonies from the word of God, answered us that they desired to pass into the communion of the Catholic Church, but were in fear of the violence of worthless men, whose enmity they would incur; which violence they ought indeed by all means to despise when it was to be borne for righteousness' sake, and for the sake of eternal life. Nevertheless the weakness of such men ought not to be regarded as hopeless, but to be supported until they gain more strength. Nor may we forget what the Lord Himself said to Peter when he was yet weak: “You can not follow Me now, but you shall follow Me afterwards.” When, however, wholesome instruction is added to means of inspiring salutary fear, so that not only the light of truth may dispel the darkness of error, but the force of fear may at the same time break the bonds of evil custom, we are made glad, as I have said, by the salvation of many, who with us bless God, and render thanks to Him, because by the fulfilment of His covenant, in which He promised that the kings of the earth should serve Christ, He has thus cured the diseased and restored health to the weak.
Source: Letters (New Advent)