《史记·七十列传·鲁仲连邹阳列传》
我听说夜明珠和夜光璧虽是珍宝，如果在黑夜的路上将其掷向行人，人们没有不惊异地按剑斜着眼睛看的。
臣闻明月之珠，夜光之璧，以闇投人於道路，人无不按剑相眄者。
I have heard that although the luminous pearl and the night-light stone are treasures, if they are thrown at a passerby on a dark night road, people will not be surprised to look at them with their swords slanted.