Six essential qualities that are the key to success: Sincerity, personal integrity, humility, courtesy, wisdom, charity.

Six essential qualities that are the key to success: Sincerity, personal integrity, humility, courtesy, wisdom, charity.

成功的六个关键要素:真诚、正直、谦逊、礼貌、智慧、慈善。

-- William C. Menninger 威廉·C·孟宁格