The excerpt represents the core issue or deciding factor on which you must meditate, and is drawn from Sophist by Plato:|
the most lasting good effect on the person who is the subject of the
operation. For as the physician considers that the body will receive no
benefit from taking food until the internal obstacles have been removed, so
the purifier of the soul is conscious that his patient will receive no
benefit from the application of knowledge until he is refuted, and from
refutation learns modesty; he must be purged of his prejudices first and
made to think that he knows only what he knows, and no more.
THEAETETUS: That is certainly the best and wisest state of mind.
STRANGER: For all these reasons, Theaetetus, we must admit that refutation
is the greatest and chiefest of purifications, and he who has not been
refuted, though he be the Great King himself, is in an awful state of