6 Are, then, your doctrines so manifestly true, that they require no support from miracles or from any testimony? Show us these self-evident truths, if you have anything of the kind to show. Your legends, as we have already seen, are long and silly, old wives fables for the amusement of women and children. The beginning is detached from the rest, the middle is unsound, and the end is a miserable failure. If you begin with the immortal, invisible, incorruptible God, what need was there of His fighting with the race of darkness?
And as for the middle of your theory, what becomes of the incorruptibility and unchangeableness of God, when His members in fruits and vegetables are purified by your mastication and digestion? And for the end, is it just that the wretched soul should be punished with lasting confinement in the mass of darkness, because its God is unable to cleanse it of the defilement contracted from evil external to itself in the fulfillment of His own commission? You are at a loss for a reply.
See the worthlessness of your boasted manuscripts, numerous and valuable as you say they are! Alas for the toils of the antiquaries! Alas for the property of the unhappy owners! Alas for the food of the deluded followers! Destitute as you are of Scripture authority, of the power of miracles, of moral excellence, and of sound doctrine, depart ashamed, and return penitent, confessing that true Christ, who is the Saviour of all who believe in Him, whose name and whose Church are now displayed as they were of old foretold, not by some being issuing from subterranean darkness, but by a nation in a distinct kingdom established for this purpose, that there those things might be figuratively predicted of Christ which are now in reality fulfilled, and the prophets might foretell in writing what the apostles now exhibit in their preaching.
Source: Reply to Faustus the Manichaean (New Advent)