质量管理的问题不是人们不知道它。问题是他们认为自己知道。
【释义】多次迁徙而没有固定的居所，但只要心如长者，就不会有忧患。
True progress is measured not just in profits, but in positive impact.
"The key is not to get too high when things are going well and not too low when things are going bad."
The human being is always more than what he knows of himself.
