《论衡·卷十三·超奇篇》
珍贵的东西出产在四面边远而偏僻的地方，这些地方不能说就没有特出的人物。
珍物产於四远幽辽之地，未可言无奇人也。
Precious goods are produced in distant and remote border regions, and it cannot be said that there is no outstanding talent in these places.