《战国策·秦二·楚绝齐齐举兵伐楚》
于是楚怀王派陈轸出使秦国。秦惠王对陈轸说： 贤卿本来就是秦国人，而且是寡人的老臣。但因为寡人不识才，对于处理国家大事又欠周详，以致使贤卿离开寡人去侍奉楚王。
楚王使陈轸之秦，秦王谓轸曰： 子，秦人也，寡人与子故也，寡人不佞，不能亲国事也，故子弃寡人，事楚王。
And so King Huai of Chu sent Chen Zhen as an envoy to Qin. King Hui of Qin said to Chen Zhen: Wise official, you were originally from Qin and an old minister of this humble King. However, because this humble King did not recognize your talents and was also lacking in his handling of important state affairs, this humble King caused you, wise official, to leave this humble King and serve King Huai of Chu.