two brothers recommence their exhortation to virtue, which is of quite
another sort.

'You want Cleinias to be wise?' 'Yes.' 'And he is not wise yet?' 'No.'
'Then you want him to be what he is not, and not to be what he is?--not to
be--that is, to perish. Pretty lovers and friends you must all be!'

Here Ctesippus, the lover of Cleinias, interposes in great excitement,
thinking that he will teach the two Sophists a lesson of good manners. But
he is quickly entangled in the meshes of their sophistry; and as a storm
seems to be gathering Socrates pacifies him with a joke, and Ctesippus then
says that he is not reviling the two Sophists, he is only contradicting
them. 'But,' says Dionysodorus, 'there is no such thing as contradiction.
When you and I describe the same thing, or you describe one thing and I
describe another, how can there be a contradiction?' Ctesippus is unable
to reply.

Socrates has already heard of the denial of contradiction, and would like
to be informed by the great master of the art, 'What is the meaning of this
paradox? Is there no such thing as error, ignorance, falsehood? Then what
are they professing to teach?' The two Sophists complain that Socrates is
ready to answer what they said a year ago, but is 'non-plussed' at what
they are saying now. 'What does the word "non-plussed" mean?' Socrates is
informed, in reply, that words are lifeless things, and lifeless things
have no sense or meaning. Ctesippus again breaks out, and again has to be
pacified by Socrates, who renews the conversation with Cleinias. The two
Sophists are like Proteus in the variety of their transformations, and he,
like Menelaus in the Odyssey, hopes to restore them to their natural form.

He had arrived at the conclusion that Cleinias must become a philosopher.