诗人的心必须向天堂所有的风敞开。
The problem of quality management is not what people don't know about it. The problem is what they think they do know.
People tend to value things more highly when they own them.
年轻时,你以为长大后就会幸福。但长大后,你意识到年轻时的自己才是幸福的。