Already knowing

It seemed to the father of Mulla Nasruddin that, now that his son had turned thirteen, it was important to discuss these matters which an adolescent ought to know about life. So he called Nasruddin into the study one evening, shut the door careful, and said with impressive dignity: "Son, I would like to discuss the facts of life with you." "Sure thing, Dad," said Nasruddin. "What do you want to know?"


Those who already know, do not know anything.  The childhood is over for this boy now.  Those who are capable of listening are the only ones who are children, irrespective of age.