History tells us that all the Jews departed Egypt, yet not all of them departed cleansed of longing; and so, sitting in the wastes of the desert, many among them lamented for Egypt's onions and meat pies. Just so there are many repentant souls who have truly renounced sin, yet have not renounced their attachment to it; which is to say, they have vowed to sin no more, but they cannot bring themselves to be deprived of sin's lamentable pleasures. Their mind turns from sin and pulls away, yet still it cannot help but glance backward toward it. Those who abstain from sin suffer grief at missing sin's joys; they discourse upon them, and refuse to acknowledge that such things harm the soul. By whatever means, they wish to smell its fragrance, and they envy those who have tasted and continue to taste it. The weak-hearted and timid among the penitent do refrain from sin awhile, yet they grieve no less for it. They wish to sin without curse, to bathe themselves in sin's pleasure. With a certain levity and charm, they speak of sin, and they regard those who commit it as quite fortunate souls. One resolved to punish himself for his own harm—at confession he will change his mind; yet not long after, you will find him among his companions, elaborating upon his quarrel with considerable relish—had he no fear of God, he would do this or that; and this business of forgiveness, this divine ordinance, is altogether difficult to bear. Alas, if retaliation for cruelty were lawful! Though the wretched man is now free of sin, who could fail to see that he remains utterly besotted with it? It is just like that girl who, though she has renounced her shameful love, is pleased when other boys court her and beg her favor. Alas! Such people are in the gravest danger! It is not enough to merely abandon the path of sin; you must free and cleanse your mind of all the attachments that cling to sin. For not only does this risk entangle you in sin again, but these lamentable longings will forever weaken your spiritual strength, will burden it so heavily that you cannot easily and sincerely do any good work at all. And yet this—this very thing—is the heart of a devoted life.
Those who have turned from the path of sin yet cannot relinquish their attachment to it—their fascination, their weakness—are, in my view, like people who are not ill, and yet whose actions do not resemble those of the healthy. They eat, but are never satisfied; they sleep, but find no rest; they laugh, but know no joy. They do not walk so much as drag themselves along the road by sheer force of will; similarly, these people perform good deeds, yet are so burdened by mental exhaustion that all the goodness drains from their actions. More than this, their poverty of spirit leaves them capable of few good works, and the fruits of those works are meager indeed.