We strip off the skin of a victim when we remove the illusion of virtue from the eyes of our mind. We cut its limbs into pieces when we carefully distinguish the content of a virtue and ponder it step by step. We should take care, so that when we conquer evil we do not replace it with frivolous goods. Otherwise those goods might produce inconstancy; they might lay hold of frivolity; they might wander off on the path of error; they might be broken by laziness and lose the value of work already done. In all things the mind should look around carefully and persevere in its provident concern. We should also note that we are sometimes afflicted by an impulse to illicit thoughts, because we are engaged in some earthly business, even if it is legitimate. When an earthly act is tinged with desire, even in a small way, the power of the ancient enemy grows against us and our minds are corrupted by no small oppression of temptation. Hence the priest of the law is bidden to burn in fire part of th...