《后汉书·列传·李陈庞陈桥列传》
起初，曹操微贱之时，没有人知道，曾经到桥玄那里问候，桥玄见了觉得有些奇异，对他说： 现在天下将乱，安定百姓的人大概要靠你吧！ 
初，曹操微时，人莫知者。尝往候玄，玄见而异焉。谓曰： 今天下将乱，安生民者其在君乎！ 
At first, when Cao Cao was still of no importance, and few people had heard of him, he once called on Qiao Xuan to pay his respects. Qiao Xuan found him rather unusual and said to him, “Just now the empire is on the verge of collapse, and the person who stabilises the people is likely to be you!”