§ i. What amount of argument, Sossius Senecio,…

§ i. What amount of argument, Sossius Senecio, will make a man know that he is improving in respect to virtue, if his advances in it do not bring about some diminution in folly, but vice, weighing equally with all his good intentions, "acts like the lead that makes the net go down?"¹ For neither in music nor grammatical knowledge could anyone recognize any improvement, if he remained as unskilful in them as before, and had not lost some of his old ignorance. Nor in the case of anyone ill would medical treatment, if it brought no relief or ease, by the disease somewhat yielding and abating, give any perception of improvement of health, till the opposite condition was completely brought about by the body recovering its full strength. But just as in these cases there is no improvement unless, by the abatement of what weighs them down till they rise in the opposite scale, they recognize a change, so in the case of those who profess philosophy no improvement or sign of improvement can be supposed, unless the soul lay aside and purge itself of some of its imperfection, and if it continue altogether bad until it become absolutely good and perfect. For indeed a wise man cannot in a moment of time change from absolute badness to perfect goodness, and suddenly abandon for ever all that vice, of which he could not during a long period of time divest himself of any portion. And yet you know, of course, that those who maintain these views frequently give themselves much trouble and bewilderment about the difficulty, that a wise man does not perceive that he has become wise, but is ignorant and doubtful that in a long period of time by little and little, by removing some things and adding others, there will be a secret and quiet improvement, and as it were passage to virtue. But if the change were so great and sudden that the