夫知人之性,莫难察焉。美恶既殊,情貌不一,有温良而为诈者,有外恭而内欺者,有外勇而内怯者,有尽力而不尽忠者。然知人之道有七焉;一曰,间之以是非而观其志;二曰,穷之以辞辩而观其变;三曰,咨之以计谋而观其识;四曰,告之以祸难而观其勇;五曰,醉之以酒而观其性;六曰,临之以利而观共廉;七曰,期之以事而观其信。——《诸葛亮集》 Husband know the nature of people, Mo Yan Cha Yan. The United States and Evil both special, different appearances, there are gentle and betrayals, there are outside the Christine and the internal bully, there are courageous and cowardice, try not to be loyal. However, there are seven Yan Yan people know; one said, between the non-view of the concept of Chi; second, the poor view to change their rhetoric; Third, counseling conspiracy and the concept of knowledge; Si Yue, sued In order to distract and view their courage; Wu Yue, drunk to the wine and the concept of its own; Liu Yue, Lee and the concept of a total of Pro Lian Li; - “Zhuge Liang set”