《国语·楚语·叶公子高论白公胜必乱》
叶公听闻后，说： 我恨他不听我的话，而感激他治理楚国，楚国能够得以治理、恢复了先王的功业的人，就是子西。
叶公闻之，曰： 吾怨其弃吾言，而德其治楚国，楚国之能平均以复先王之业者，夫子也。
Upon hearing the news, Ye Gong said, “I despise him for not listening to my advice, but I am grateful to him for governing Chu. The man who was able to govern Chu and restore that to his former glory was none other than Zixi.