以子之矛，攻子之盾

以子之矛，攻子之盾yǐ zǐ zhī máo，gōng zǐ zhī dùn

◎用你自己的矛來刺你自己的盾。比喻用對方的論點來駁斥對方。

英文Turn sb's battery against himself; Fight sb.with his own weapon;

以子之矛，攻子之盾

• 英語 lit. use sb's spear to attack his shield (idiom, derived from Han Feizi 韓非子|韓非子)​; turning a weapon against its owner, fig. to attack an opponent using his own devices, hoist with his own petard

以子之矛，攻子之盾yǐ zǐ zhī máo gōng zǐ zhī dùn

◎比喻以對方的觀點、理論來反駁對方。

例證語本《韓非子 · 難一》：“楚人有鬻楯與矛者，譽之曰：『吾楯之堅，物莫能陷也。』又譽其矛曰：『吾矛之利，於物無不陷也。』或曰：『以子之矛，陷子之楯何如？其人弗能應也。』”