A Chinese student once went to his teacher and asked him a question: "Sir, is there any good in talking a lot?"
The teacher replied: "Toads and frogs croak night and day, but no one pays any attention to them. But the cock crows at a certain time of night and wakes up everyone."
"This proves that no good is achieved by talking a lot. What is important is to say the right thing at the right time."
