Once Sima Niu, a disciple of Confucius, asked how to be a gentleman. Confucius said, "A gentleman is neither sad nor afraid." Sima Niu didn't quite understand and asked, "Can you tell a gentleman not to worry or be afraid?" Confucius' answer is: "If you introspect, what is your husband worried about?" In other words, if you have a clear conscience, what are you sad and afraid of? Of course, an honest person's openness is not only a matter of correct behavior, but also comes from people's inner moral quality. The ancients believed that a gentleman had three basic qualities-kindness, wisdom and courage.

Confucius said, "The benevolent is not worried, the wise is not confused, and the brave is not afraid." That is to say, if a person has a loving heart, a lofty life wisdom and a brave and strong will, then he is bound to have a good psychological and mental state, so as to be broad-minded and open-minded.