1.  "First of all," says he, "he must be asked who denies man's ability to live without sin, what: every sort of sin is,--is it such as can be avoided? or is it unavoidable? If it is unavoidable, then it is not sin; if it can be avoided, then a man can live without the sin which can be avoided. No reason or justice permits us to designate as sin what cannot in any way be avoided." Our answer to this is, that sin can be avoided, if our corrupted nature be healed by God's grace, through our Lord Jesus Christ. For, in so far as it is not sound, in so far does it either through blindness fail to see, or through weakness fail to accomplish, that which it ought to do; "for the flesh lusteth against the spirit, and the spirit against the flesh," so that a man does not do the things which he would.

2.   "We must next ask," he says, "whether sin comes from will, or from necessity? If from necessity, it is not sin; if from will, it can be avoided." We answer as before; and in order that we may be healed, we pray to Him to whom it is said in the psalm: "Lead Thou me out of my necessities."

3. "Again we must ask," he says, "what sin is,--natural? or accidental? If natural, it is not sin; if accidental, it is separable; and if it is separable, it can be avoided; and because it can be avoided, man can be without that which can be avoided." The answer to this is, that sin is not natural; but nature (especially in that corrupt state from which we have become by nature "children of wrath" ) has too little determination of will to avoid sin, unless assisted and healed by God's grace through Jesus Christ our Lord.

4. "We must ask, again," he says, "What is sin,--an act, or a thing? If it is a thing, it must have an author; and if it be said to have an author, then another besides God will seem to be introduced as the author of a thing. But if it is impious to say this, we are driven to confess that every sin is an act, not a thing. If therefore it is an act, for this very reason, because it is an act, it can be avoided." Our reply is, that sin no doubt is called an act, and is such, not a thing. But likewise in the body, lameness for the same reason is an act, not a thing, since it is the foot itself, or the body, or the man who walks lame because of an injured foot, that is the thing; but still the man cannot avoid the lameness, unless his foot be cured. The same change may take place in the inward man, but it is by God's grace, through our Lord Jesus Christ. The defect itself which causes the lameness of the man is neither the foot, nor the body, nor the man, nor indeed the lameness itself; for there is of course no lameness when there is no walking, although there is nevertheless the defect which causes the lameness whenever there is an attempt to walk. Let him therefore ask, what name must be given to this defect,-would he have it called a thing, or an act, or rather a bad property in the thing, by which the deformed act comes into existence? So in the inward man the soul is the thing, theft is an act, and avarice is the defect, that is, the property by which the soul is evil, even when it does nothing in gratification of its avarice,even when it hears the prohibition, "Thou shalt not covet," and censures itself, and yet remains avaricious. By faith, however, it receives renovation; in other words, it is healed day by day,- -yet only by God's grace through our Lord Jesus Christ.

5. "We must again," he says, "inquire whether a man ought to be without sin. Beyond doubt he ought. If he ought, he is able; if he is not able, then he ought not. Now if a man ought not to be without sin, it follows that he ought to be with sin,-and then it ceases to be sin at all, if it is determined that it is owed. Or if it is absurd to say this, we are obliged to confess that man ought to be without sin; and it is clear that his obligation is not more than his ability." We frame our answer with the same illustration that we employed in our previous reply. When we see a lame man who has the opportunity of being cured of his lameness, we of course have a right to say: "That man ought not to be lame; and if he ought, he is able." And yet whenever he wishes he is not immediately able; but only after he has been cured by the application of the remedy, and the medicine has assisted his will. The same thing takes place in the inward man in relation to sin which is its lameness, by the grace of Him who "came not to call the righteous, but sinners;" since "the whole need not the physician, but only they that be sick."

6. "Again," he says, "we have to inquire whether man is commanded to be without sin; for either he is not able, and then he is not commanded; or else because he is commanded, he is able. For why should that be commanded which cannot at all be done?" The answer is, that man is most wisely commanded to walk with right steps, on purpose that, when he has discovered his own inability to do even this, he may seek the remedy which is provided for the inward man to cure the lameness of sin, even the grace of God, through our Lord Jesus Christ.

7. "The next question we shall have to propose," he says, "is, whether God wishes that man be without sin. Beyond doubt God wishes it; and no doubt he has the ability. For who is so foolhardy as to hesitate to believe that to be possible, which he has no doubt about God's wishing?" This is the answer. If God wished not that man should be without sin, He would not have sent His Son without sin, to heal men of their sins. This takes place in believers who are being renewed day by day, until their righteousness becomes perfect, like fully restored health.

8. "Again, this question must be asked," he says, "how God wishes man to be,-with sin, or without sin? Beyond doubt, He does not wish him to be with sin. We must reflect how great would be the impious blasphemy for it to be said that man has it in his power to be with sin, which God does not wish; and for it to be denied that he has it in his power to be without sin, which God wishes: just as if God had created any man for such a result as this,-that he should be able to be what He would not have him, and unable to be what He would have him; and that he should lead an existence contrary to His will, rather than one which should be in accordance therewith." This has been in fact already answered; but I see that it is necessary for me to make here an additional remark, that we are saved by hope. "But hope that is seen is not hope; for what a man seeth, why doth he yet hope for? But if we hope for that we see not, then do we with patience wait for it." Full righteousness, therefore, will only then be reached, when fullness of health is attained; and this fullness of health shall be when there is fullness of love, for "love is the fulfilling of the law;" and then shall come fullness of love, when "we shall see Him even as He is." Nor will any addition to love be possible more, when faith shall have reached the fruition of sight.

9. "The next question we shall require to be solved," says he, "is this: By what means is it brought about that man is with sin?--by the necessity of nature, or by the freedom of choice? If it is by the necessity of nature, he is blameless; if by the freedom of choice, then the question arises, from whom he has received this freedom of choice. No doubt, from God. Well, but that which God bestows is certainly good. This cannot be gainsaid. On what principle, then, is a thing proved to be good, if it is more prone to evil than to good? For it is more prone to evil than to good if by means of it man can be with sin and cannot be without sin." The answer is this: It came by the freedom of choice that man was with sin; but a penal corruption closely followed thereon, and out of the liberty produced necessity. Hence the cry of faith to God, "Lead Thou me out of my necessities." With these necessities upon us, we are either unable to understand what we want, or else (while having the wish) we are not strong enough to accomplish what we have come to understand. Now it is just liberty itself that is promised to believers by the Liberator. "If the Son," says He, "shall make you free, ye shall be free indeed." For, vanquished by the sin into which it fell by its volition, nature has lost liberty. Hence another scripture says, "For of whom a man is overcome, of the same is he brought in bondage." Since therefore "the whole need not the physician, but only they that be sick;" so likewise it is not the free that need the Deliverer, but only the enslaved. Hence the cry of joy to Him for deliverance, "Thou hast saved my soul from the straits of necessity." For true liberty is also real health; and this would never have been lost, if the will had remained good. But because the will has sinned, the hard necessity of having sin has pursued the sinner; until his infirmity be wholly healed, and such freedom be regained, that there must needs be, on the one hand, a permanent will to live happily, and, on the other hand, a voluntary and happy necessity of living virtuously, and never sinning.

10. "Since God made man good," he says, "and, besides making him good, further commanded him to do good, how impious it is for us to hold that man is evil, when he was neither made so, nor so commanded; and to deny him the ability of being good, although he was both made so, and commanded to act so!" Our answer here is: Since then it was not man himself, but God, who made man good; so also is it God, and not man himself, who remakes him to be good, while liberating him from the evil which he himself did upon his wishing, believing, and invoking such a deliverance. But all this is effected by the renewal day by day of the inward man, by the grace of God through our Lord Jesus Christ, with a view to the outward man's resurrection at the last day to an eternity not of punishment, but of life.

11. "The next question which must be put," he says, "is, in how many ways all sin is manifested? In two, if I mistake not: if either those things are done which are forbidden, or those things are not done which are commanded. Now, it is just as certain that all things which are forbidden are able to be avoided, as it is that all things which are commanded are able to be effected. For it is vain either to forbid or to enjoin that which cannot either be guarded against or accomplished. And how shall we deny the possibility of man's being without sin, when we are compelled to admit that he can as well avoid all those things which are forbidden, as do all those which are commanded?" My answer is, that in the Holy Scriptures there are many divine precepts, to mention the whole of which would be too laborious; but the Lord, who on earth consummated and abridged.  His word, expressly declared that the law and the prophets hung on two commandments, that we might understand that whatever else has been enjoined on us by God ends in these two commandments, and must be referred to them: "Thou shall love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind;" and "Thou shall love thy neighbour as thyself."  "On these two commandments," says He, "hang all the law and the prophets." Whatever, therefore, we are by God's law forbidden, and whatever we are bidden to do, we are forbidden and bidden with the direct object of fulfilling these two commandments. And perhaps the general prohibition is, "Thou shalt not covet;" and the general precept, "Thou shall love."  Accordingly the Apostle Paul, in a certain place, briefly embraced the two, expressing the prohibition in these words, "Be not conformed to this world," and the command in these, "But be ye transformed by the renewing of your mind." The former falls under the negative precept, not to covet; the latter under the positive one, to love. The one has reference to continence, the other to righteousness. The one enjoins avoidance of evil; the other, pursuit of good. By eschewing covetousness we put off the old man, and by showing love we put on the new. But no, man can be continent unless God endow him with the gift; nor is God's love shed abroad in our hearts by our own selves, but by the Holy Ghost that is given to us. This, however, takes place day after day in those who advance by willing, believing, and praying, and who, "forgetting those things which are behind, reach forth unto those things which are before." For the reason why the law inculcates all these precepts is, that when a man has failed in fulfilling them, he may not be swollen with pride, and so exalt himself, but may in very weariness betake himself to grace. Thus the law fulfils its office as" schoolmaster," so terrifying the man as "to lead him to Christ," to give Him his love.

12. "Again the question arises," he says, "how it is that man is unable to be without sin,--by his will, or by nature? If by nature, it is not sin; if by his will, then will can very easily be changed by will." We answer by reminding him how he ought to reflect on the extreme presumption of saying-not simply that it is possible (for this no doubt is undeniable, when God's grace comes in aid), but-that it is "very easy" for will to be changed by will; whereas the apostle says, "The flesh lusteth against the spirit, and the spirit against the flesh: and these are contrary the one to the other; so that ye do not the things that ye would." He does not say, "These are contrary the one to the other, so that ye will not do the things that ye can," but, "so that ye do not the things that ye would." How happens it, then, that the lust of the flesh which of course is culpable and corrupt, and is nothing else than the desire for sin, as to which the same apostle instructs us not to let it "reign in our mortal body;" by which expression he shows us plainly enough that that must have an existence in our mortal body which must not be permitted to hold a dominion in it;-how happens it, I say, that such lust of the flesh has not been changed by that will, which the apostle clearly implied the existence of in his words, "So that ye do not the things that ye would," if so be that the will can so easily be changed by will? Not that we, indeed, by this argument throw the blame upon the nature either of the soul or of the body, which God created, and which is wholly good; but we say that it, having been corrupted by its own will, cannot be made whole without the grace of God.

13. "The next question we have to ask," says he, "is this: If man cannot be without sin, whose fault is it,-man's own, or some one's else? If man's own, in what way is it his fault if he is not that which he is unable to be?" We reply, that it is man's fault that he is not without sin on this account, because it has by man's sole will come to pass that he has come into such a necessity as cannot be overcome by man's sole will.

14. "Again the question must be asked," he says, "If man's nature is good, as nobody but Marcion or Manichaeus will venture to deny, in what way is it good if it is impossible for it to be free from evil? For that all sin is evil who can gainsay?" We answer, that man's nature is both good, and is also able to be free from evil. Therefore do we earnestly pray, "Deliver us from evil." This deliverance, indeed, is not fully wrought, so long as the soul is oppressed by the body, which is hastening to corruption. This process, however, is being effected by grace through faith, so that it may be said by and by, "O death, where is thy struggle? Where is thy sting, O death? The sting of death is sin, and the strength of sin is the law;" because the law by prohibiting sin only increases the desire for it, unless the Holy Ghost spreads abroad that love, which shall then be full and perfect, when we shall see face to face.

15. "And this, moreover, has to be said," he says: "God is certainly righteous; this cannot be denied. But God imputes every sin to man. This too, I suppose, must be allowed, that whatever shall not be imputed as sin is not sin. Now if there is any sin which is unavoidable, how is God said to be righteous, when He is supposed to impute to any man that which cannot be avoided?" We reply, that long ago was it declared in opposition to the proud, "Blessed is the man to whom the Lord imputeth not sin." Now He does not impute it to those who say to Him in faith, "Forgive us our debts, as we forgive our debtors." And justly does He withhold this imputation, because that is just which He says: "With what measure ye mete, it shall be measured to you again." That, however, is sin in which there is either not the love which ought to be, or where the love is less than it ought to be,- -whether it can be avoided by the human will or not; because when it can be avoided, the man's present will does it, but if it cannot be avoided his past will did it; and yet it can be avoided,-not, however, when the proud will is lauded, but when the humble one is assisted.

Augustine.  Concerning Man's Perfection in Righteousness.  Trans.  Philip Schaff.  Nicene and Post-Nicene Fathers.  Vol.  5, 1887.