Perhaps some self-styled philosophers (7) may here answer: "Nay, the man truly just can never become unjust, the temperate man can never become intemperate, the man who has learnt any subject of knowledge can never be as though he had learnt it not." That, however, is not my own conclusion. It is with the workings of the soul as with those of the body; want of exercise of the organ leads to inability of function, here bodily, there spiritual, so that we can neither do the things that we should nor abstain from the things we should not. And that is why fathers keep their sons, however temperate they may be, out of the reach of wicked men, considering that if the society of the good is a training in virtue so also is the society of the bad its dissolution. (7) In reference to some such tenet as that of Antisthenes ap. Diog. Laert. VI. ix. 30, {areskei d' autois kai ten areten didakten einai, katha phesin 'Antisthenes en to 'Rraklei kai anapobleton uparkhein}. Cf. Plat. "Protag." 340 D, 344 D. To this the poet (8) is a witness, who says: "From the noble thou shalt be instructed in nobleness; but, and if thou minglest with the base thou wilt destroy what wisdom thou hast now"; And he (9) who says: "But the good man has his hour of baseness as well as his hour of virtue"-- to whose testimony I would add my own. For I see that it is impossible to remember a long poem without practice and repetition; so is forgetfulness of the words of instruction engendered in the heart that has ceased to value them. With the words of warning fades the recollection of the very condition of mind in which the soul yearned after holiness; and once forgetting this, what wonder that the man should let slip also the memory of virtue itself! Again I see that a man who falls into habits of drunkenness or plunges headlong into licentious love, loses his old power of practising the right and abstaining from the wrong. Many a man who has found frugality easy whilst passion was cold, no sooner falls in love than he loses the faculty at once, and in his prodigal expenditure of riches he will no longer withhold his hand from gains which in former days were too base to invite his touch. Where then is the difficulty of supposing that a man may be temperate to-day, and to-morrow the reverse; or that he who once has had it in his power to act virtuously may not quite lose that power? (10) To myself, at all events, it seems that all beautiful and noble things are the result of constant practice and training; and pre-eminently the virtue of temperance, seeing that in one and the same bodily frame pleasures are planted and spring up side by side with the soul and keep whispering in her ear, "Have done with self-restraint, make haste to gratify us and the body." (11) (8) Theognis, 35, 36. See "Symp." ii. 4; Plat. "Men." 95 D. (9) The author is unknown. See Plat. "Protag." l.c. (10) Cf. "Cyrop." V. i. 9 foll.; VI. i. 41.