Epictetus

“ Why, then, do you play at hazard in matters of the utmost moment, why do you take things lightly, why do you put your hand to a task that is altogether inappropriate for you? Leave it to those who are able to do it, and do it with distinction. Do not yourself by your own actions join the number of those who bring disgrace upon philosophy, and do not become one of those who disparage the profession. ”

“ The builder does not come forward and say, "Listen to me deliver a discourse about the art of building"; but he takes a contract for a house, builds it, and thereby proves that he possesses the art. 5Do something of the same sort yourself too; eat as a man, drink as a man, adorn yourself, marry, get children, be active as a citizen; endure revilings, bear with an unreasonable brother, father, son, neighbour, fellow-traveller. Show us that you can do these things, for us to see that in all truth you have learned something of the philosophers. ”

“ Nay, it may be that not even wisdom is all that is needed for the care of the young; one ought also to have a certain readiness and special fitness for this task, by Zeus, and a particular physique, and above all the counsel of God advising him to occupy this office, as God counselled Socrates to take the office of examining and confuting men, Diogenes the office of rebuking men in a kingly manner, and Zeno that of instructing men and laying down doctrines. ”