《汉书·传·扬雄传下》
眼如明星，舌似电光，一纵一横，辩论者没人能抵挡，却作《太玄》五千字，枝叶分布，衹解说十余万言，深的到黄泉，高的出苍天，大的涵元气，细的无可比，然而位不过侍郎，提升才到给事黄门。
目如耀星，舌如电光，一从一衡，论者莫当，顾而作《太玄》五千文，支叶扶疏，独说十余万言，深者入黄泉，高者出苍天，大者含元气，纤者入无伦，然而位不过侍郎，擢才给事黄门。
Eyes are like stars, tongue is like electric light, one vertical and one horizontal, no one can resist the debaters, but they wrote five thousand words of "Tai Xuan", distributing branches and leaves, only explaining more than 100,000 words, diving into the netherworld, going out of the sky, assimilating vitality, and being incomparable, but the position is only a minister, and the promotion is only a minister of giving things.