《韩非子·说疑》
君主喜欢使者的话，认为他讲得头头是道，从而认为他称赞的奸臣是天下的贤士。
主说其言而辩其辞，以此人者天下之贤士也。
The monarch enjoyed what the envoy said and believed every word of it, and thus believed that the treacherous minister he praised was a great person in the world.