XXII. (158) Therefore having put an end to empty opinion, on which the chief multitude of men depends, and being devoted to that most sacred possession, truth, let us not use incorrect terms so as to attribute to those who thus call themselves citizens any real share in a free constitution, or any real liberty; nor, on the other hand, let us reproach those who have been born in the house of a master, or who have been bought with money as slaves, but let us rather pass over all ideas of birth, all writings implying mastership, and, in short, everything relating to the body, and let us confine ourselves to investigating the nature of the soul. (159) For if it is driven to and fro by appetite, or if it is attracted by pleasure, or turned out of the way by fear, or contracted by grief, or tortured by want, it then makes itself a slave, and makes him who possesses such a soul the slave of ten thousand masters. But if it has resisted and subdued ignorance by prudence, and intemperance by temperance, and cowardice by bravery, and covetousness by justice; it then adds to its indomitable free spirit, power and authority. (160) And all the souls which are not as yet partakers of either of these two classes, neither of that which is enslaved, nor of that by which prudence is confirmed, but which are still naked like those of completely infant children; those we must nurse and cherish carefully, prescribing for them at first tender food instead of milk, namely, instruction in the encyclical sciences, and after that stronger food, such as is prepared by philosophy, by which they will be strengthened so as to become manly, and in good condition, and conducted on to a favourable end, not more that are recommended by you than enjoined by the oracle, “To live in conformity to nature.”