The carpenter does not come and say, 'Hear me discourse on carpentry', but he undertakes a contract and builds a house and so shows that he has acquired the art. Do you likewise: eat as a man, drink as a man, adorn yourself, marry, get children, live a citizen's life; endure revilings, bear with an inconsiderate brother, bear with a father, a son, a travelling companion. Show us that you can do this, and then we shall see that you have in truth learnt something from the philosophers.