《孟子·万章章句上·第九节》
宫之奇劝谏虞君，百里奚没有劝阻，因为他知道虞君是劝阻不了的于是就离去了。
宫之奇谏，百里奚不谏。
Gong Zhi Qi advised the Duke of Yu, but Bai Li Xi did not try to dissuade him because he knew that the Duke of Yu would not listen, so he left.