But if one is curable, able to bear (like fire or steel) the outspokenness of the truth, which cuts away and burns their false opinions, let him lend the ears of the soul. And this will be the case, unless, through the propensity to sloth, they push truth away, or through the desire of fame, endeavour to invent novelties. For those are slothful who, having it in their power to provide themselves with proper proofs for the divine Scriptures from the Scriptures themselves, select only what contributes to their own pleasures. And those have a craving for glory who voluntarily evade, by arguments of a diverse sort, the things delivered by the blessed apostles and teachers, which are wedded to inspired words; opposing the divine tradition by human teachings, in order to establish the heresy. For, in truth, what remained to be said—in ecclesiastical knowledge I mean—by such men, Marcion, for example, or Prodicus, and such like, who did not walk in the right way? For they could not have surpassed their predecessors in wisdom, so as to discover anything in addition to what had been uttered by them; for they would have been satisfied had they been able to learn the things laid down before.