楚人有鬻盾与矛者，誉之曰：“吾盾之坚，物莫能陷之。”以誉其矛曰：“吾矛之利，于物无不陷也。”或曰：“以子之矛陷子之盾，何如？”其人弗能应也。夫不可陷之盾与无不陷之矛不可同世而立。
白话翻译
有个卖盾和矛的楚国人，夸他的盾说：“我的盾坚固得没有一个东西刺得破啊。”又夸他的矛说：“我的矛锋利得没有一个东西刺不破啊。”有人说：“用您的矛来刺您的盾，会怎么样？”那个人可就回答不出来啦。刺不破的盾和什么东西都刺得破的矛不可能同时存在。
SPEARS AND SHIELDS
There was a man of the state of Chu who sold shields and spears. He bragged about his shields saying:” My shields are so hard that nothing can pierce through them .”He also bragged about his spears saying:” My spears are so sharp that there is nothing they cannot pierce through.” Someone said:” What would happen if people were to use your spears to pierce through your shields?’ That person could not answer. Now, shields that cannot be pierced through and spears that can pierced through anything cannot exist at the sane time.
