《左传·襄公·襄公二十五年》
子产很高兴，把这些话告诉子太叔，而且说： 以前我见到的只是然明的面貌，现在我了解到他内心甚有见识。 
子产喜，以语子大叔，且曰： 他日吾见蔑之面而已，今吾见其心矣。 
Zichan was very happy, and told these words to Zitaishu, and said, "Formerly I saw only Ran Ming’s appearance, but now I know that he is really a man of insight.”