More General Rules about Hearing.
3. Since then it appears that hearing is of so great use and no less danger to young men, I think it a very commendable thing for such a one to reflect continually with himself, and consult often with others, how he may hear with benefit. And in this particular we may observe many to have been mistaken, that they practise speaking before they have been used enough to hearing. Speaking they think will require some study and attention, but hearing cannot be a thing of any difficulty. Those indeed who play the game of tennis learn at the same time how to throw and how to catch the ball; but in the exercise of the tongue, we ought to practise how to talk well before we pretend to return, as conception and retention of the foetus precede childbirth. When fowls let fall wind-eggs, it is usually said that they are the rudiments of imperfect fruits which will never quicken and have life; and when young men either hear not at all or retain not what they hear, their discourse comes from them altogether as useless and full of wind,
In filling one vessel from another, they take care to incline and turn it so that nothing be spilled, and that it may be really filling and not emptying; but they think it not worth the heeding to regulate their attention and apply themselves with advantage to a speaker, that nothing of importance may fall beside or escape them. Yet, what is beyond comparison ridiculous, if they happen upon any one who has a knack at describing an entertainment or a show, or can relate his dream well, or give an handsome account of a quarrel between himself and another, such a one they hear with the greatest attention, they court him to proceed, and importune him for every circumstance. Whereas, let another call them about him for any thing useful, to exhort to what is decent or reprehend what is irregular, or to make up a quarrel, they have not temper enough to away with it, but they fight with all their might to put him down by argument, if they are able, or if not, they haste away to more agreeable fopperies; as if their ears, like faulty earthen vessels, might be filled with any thing but what is useful or valuable. But as jockeys take great care in breeding horses to bring them to rein right and endure the bit, so such as have the care of educating children should breed them to endure hearing, by allowing them to speak little and hear much. And Spintharus, speaking in commendation of Epaminondas, says he scarce ever met with any man who knew more and spoke less. Some again make the observation, that Nature has given every man two ears and but one tongue, as a secret intimation that he ought to speak less than he hears.