His 'son and heir' Polemarchus has the frankness and impetuousness of youth; he is for detaining Socrates by force in the opening scene, and will not 'let him off' (v. 449 B) on the subject of women and children. Like Cephalus, he is limited in his point of view, and represents the proverbial stage of morality which has rules of life rather than principles; and he quotes Simonides (cp. Aristoph. Clouds, 1355 ff.) as his father had quoted Pindar. But after this he has no more to say; the answers which he makes are only elicited from him by the dialectic of Socrates. He has not yet experienced the influence of the Sophists like Glaucon and {xi} Adeimantus, nor is he sensible of the necessity of refuting them; he belongs to the pre-Socratic or pre-dialectical age. He is incapable of arguing, and is bewildered by Socrates to such a degree that he does not know what he is saying. He is made to admit that justice is a thief, and that the virtues follow the analogy of the arts. From his brother Lysias (contra Eratosth. p. 121) we learn that he fell a victim to the Thirty Tyrants, but no allusion is here made to his fate, nor to the circumstance that Cephalus and his family were of Syracusan origin, and had migrated from Thurii to Athens. The 'Chalcedonian giant,' Thrasymachus, of whom we have already heard in the Phaedrus (267 D), is the personification of the Sophists, according to Plato's conception of them, in some of their worst characteristics. He is vain and blustering, refusing to discourse unless he is paid, fond of making an oration, and hoping thereby to escape the inevitable Socrates; but a mere child in argument, and unable to foresee that the next 'move' (to use a Platonic expression) will 'shut him up' (vi. 487 B). He has reached the stage of framing general notions, and in this respect is in advance of Cephalus and Polemarchus. But he is incapable of defending them in a discussion, and vainly tries to cover his confusion with banter and insolence. Whether such doctrines as are attributed to him by Plato were really held either by him or by any other Sophist is uncertain; in the infancy of philosophy serious errors about morality might easily grow up--they are certainly put into the mouths of speakers in Thucydides; but we are concerned at present with Plato's description of him, and not with the historical reality. The inequality of the contest adds greatly to the humour of the scene. The pompous and empty Sophist is utterly helpless in the hands of the great master of dialectic, who knows how to touch all the springs of vanity and weakness in him. He is greatly irritated by the irony of Socrates, but his noisy and imbecile rage only lays him more and more open to the thrusts of his assailant. His determination to cram down their throats, or put 'bodily into their souls' his own words, elicits a cry of horror from Socrates. The state of his temper is quite as worthy of remark as the process of the argument.