《战国策·赵四·楼缓将使伏事辞行》
楼缓将要出使，领受任务辞行，对赵惠文王说： 臣下虽然竭尽全力和智慧，但是死了也不能再见到大王了。 
楼缓将使，伏事，辞行，谓赵王曰： 臣虽尽力竭知，死不复见于王矣。 
Lou Huan was about to go on a mission, and when he received the task, he said to King Huiwen of Zhao, "Although your humble servant has exhausted all his efforts and wisdom, he will not be able to see Your Majesty again after his death."