《韩非子·外储说右下》
明君要借鉴国外的经验，然而对国外的事情借鉴不当还是不能成功，于是就有苏代批评齐王不信大臣的故事。
明主者，鉴于外也，而外事不得不成，故苏代非齐王。
A wise monarch should learn from foreign experience, but if he fails to learn from it properly, he will not be able to succeed. For this reason, Su Dai criticized King Qi for not trusting his ministers.