元代大学者许衡一日外出,因天气炎热,口渴难忍。路边正好有一棵梨树,行人纷纷去摘梨,唯独许衡不为所动。有人问:“何不摘梨以解渴?”他答:“不是自己的梨,岂能乱摘?”那人笑他迂腐:“世道这样乱,谁知道梨还有没有主人。”许衡正色道:“梨虽无主,我心有主。” Xu Yuan, a university student, went out on the 1st because of the hot weather and thirst. There is just a pear tree roadside, pedestrians have to pick pears, only Xu Heng unmoved. Someone asked: “Why do not pick pears to quench their thirst?” He said: “Not your own pears, how can we pick?” The man laughed at his pedantry: “The world is so chaotic, who knows there are no pears.” “Xu Heng Zheng color Road: ” Although there is no pear, I have the main heart. "