“Don't use cannon to kill musquito.”

“The Essence of Knowledge is, having it, to use it.”

“The way out is through the door. Why is it that no one will use this method?”

“If you don't want to do something,don't impose on others”

“Don't do unto others what you don't want done unto you.”

“I used to take on trust a man's deeds after having listened to his words. Now having listened to a man's words I go on to observe his deeds.”

“When it is obvious that the goals cannot be reached, don't adjust the goals, adjust the action steps.”