《太平广记·卷一百六十一·感应一》
扬雄扬雄读书，听到有个人在旁边说： 没有意义的自找苦吃，深奥的道理难以领会。 
雄著玄，梦吐白凤皇集上，顷之而灭。扬雄读书，听到有个人在旁边说： 没有意义的自找苦吃，深奥的道理难以领会。 
Yang Xiong studied; he heard a person next to him say: Pointless self-inflicted suffering, it is hard to understand profound reasoning.