An African King sent three messengers to ask a famous sage in a neighboring
kingdom to tell them 100 of his best proverbs.   He told them to sit down and
close their eyes.  For half an hour he said nothing more.  Then he said, “Tell
me your dreams.”   Puzzled, they replied, “How can we tell you our dreams if we
have not slept?”  He then sprung the trap by saying, “And how can I tell you
proverbs if the situation has not arisen?”