齐景公出猎,上山见虎,下泽见蛇。归,召晏子而问之曰:“今日寡人出猎,上山则见虎,下泽则见蛇,殆所谓之不祥也?”晏子曰:“国有三不祥,是不与焉。夫有贤而不知,一不祥:知而不用,二不祥;用而不任,三不祥也。所谓不祥,乃若此者也。今上山见虎,虎之室也;下泽见蛇,蛇之穴也。如虎之室,如蛇之穴,而见之,曷为不祥也?”(选自刘向《说苑·君道》) Qijing King hunting, the tiger up the mountain, the next Ze saw snakes. Returning to, called Yan Zi and asked: “today a few people hunting, the mountain is the tiger, the next Ze see snake, the so-called ominous also?” Yan Zi said: “State of the three unlucky, is not with Yan. Yin and I do not know, an ominous: know and not, two ominous; with no office, three ominous also. The so-called ominous, but if this is also now up the hill to see the tiger, tiger room also; Also, as the tiger’s room, such as the snake’s point, and see it, 曷 for the ominous also? ”(From Liu Xiang,“ said Yuan Jun Road ”)