[91] [cap.20] And before now some persons, even more excessively extravagant in wickedness than these, have not only prepared their own souls for such actions, but have also put a force upon those of a superior class and of the genus which is endowed with acuteness of vision, and have "compelled them to make bricks and to build strong cities" [57] for the mind, which has [58] appeared to occupy the place of king, wishing to point out this fact, that what is good is the slave of what is evil, and that subjection to the passions is more powerful than tranquillity of soul, and prudence, and all virtue is, but, as it were, a subject of folly and all wickedness, so as of necessity to minister in all the matters which the master power enjoins;