《三国志·魏书·桓二陈徐卫卢传》
陈矫劝说太祖： 我们这个郡虽然小，但是各地理形势有利的地方，如果得到您的救援，让我们成为您的外藩，那吴人的阴谋就会失败，徐方也能一直安定，您的武力威势也能震动远方地区，您的仁德慈爱也会推广开来，那些现在还没有服从的国家，都会看着形势像影子一样前来依附，推崇德教，培养威势，这是成就王业的办法。 
矫说太祖曰： 鄙郡虽小，形便之国也，若蒙救援，使为外藩，则吴人剉谋，徐方永安，武声远震，仁爱滂流，未从之国，望风景附，崇德养威，此王业也。 
Chen Jiao advised the Grand Ancestor: Our commandery, though small, has favorable geographical features. If we receive your relief and become your vassal, the Wu's plot will be defeated, and Xu Fang will become stable; your military prestige will also shake the distant regions, and your benevolence will become known far and wide. The states that are not yet in compliance will all look to you as a shadow and follow you. To cultivate morality and nurture power is the way to establish a royal cause.