Wise men don’t always acts as wisely as we think. At times 
he maybe do something silly. Because we always think they
are well-known, so the stories about their foolish acts are still   
talked widely throughout the world in modern times. For example,  
Beethoven, the great composer of Austria, was saying to have insisted 
on paying a waiter in a restaurant for a dinner he has not eaten or   
ever ordered; the great British physicist Newton, while lived in 
London, cut two holes in the doors of his flat, one big, other small,   
so as for his two cat to pass through. He only thought the 
bigger cats could not get through the smaller hole easy.