Now the Gnostic must be erudite. And since the Greeks say that Protagoras having led the way, the opposing of one argument by another was invented, it is fitting that something be said with reference to arguments of this sort. For Scripture says, “He that says much, shall also hear in his turn.” And who shall understand a parable of the Lord, but the wise, the intelligent, and he that loves his Lord? Let such a man be faithful; let him be capable of uttering his knowledge; let him be wise in the discrimination of words; let him be dexterous in action; let him be pure. “The greater he seems to be, the more humble should he be,” says Clement in the Epistle to the Corinthians,—“such an one as is capable of complying with the precept, ‘And some pluck from the fire, and on others have compassion, making a difference.’”