When Socrates, on the other hand, found any who soothe themselves up in the belief that they are well instructed, and who boast of their own sufficiency, he never failed to chastise the vanity of such persons. Of his conduct in this particular I will relate the following instance-- He had been told that Euthydemus had bought up several works of the most celebrated poets and sophists, and that this acquisition had so puffed him up with arrogance, that he already esteemed himself the greatest man for learning and parts of any of the age, and pretended to no less than being the first man of the city, either for negotiating or for discoursing in public. Nevertheless, he was still so young that he was not admitted into the assemblies of the people, and if he had any affair to solicit he generally came and placed himself in one of the shops that were near the courts of justice. Socrates, having observed his station, failed not to go thither likewise with two or three of his friends; and there, being fallen into discourse, this question was started: Whether it was by the improving conversation of philosophers or by the strength of his natural parts only, that Themistocles surpassed all his countrymen in wisdom and valour, and advanced himself to such a high rank and to so great esteem, that all the Republic cast their eyes upon him whenever their affairs required the conduct of a man of bravery and wisdom? Socrates, who had a mind to reflect upon Euthydemus, answered that "a man must be very stupid to believe that mechanic arts (which are comparatively things but of small importance) cannot be learnt without masters; and yet that the art of governing of States, which is a thing of the greatest moment and that requires the greatest effort of human prudence, comes of itself into the mind." And this was all that passed in this first interview. After this Socrates, observing that Euthydemus always avoided being in his company, lest he should be taken for one of his admirers, attacked him more openly; and once when he happened to be where he was, addressed himself to the rest of the company in these words:--"Certainly, gentlemen, by what may be conjectured from the studies of this young man, it is very likely that when he shall have attained the age that permits him to be present in the assemblies of the people, if any important affair come to be debated there, he will not fail to give his judgment of it; and in my opinion he would introduce his harangue by a very pleasant exordium, if he should begin with giving them to understand that he had never learnt anything of any man whatsoever; he must address himself to them in words to this purpose:--