自我矛盾
楚人有鬻盾与矛者, 誉之曰: “吾盾之坚,物无莫能陷也。” 又誉其矛曰:“吾无矛之利,于物无不陷也。” 或曰:“以子之矛,陷子之盾,何如?”其人弗佛能应也。夫不可陷之盾,与物无不陷之矛,不可同世而立。
A man from the country of chu was selling spears and shields, he praised his wares saying "My shield is strong, there is nothing that can pierce it." He also praised his spear, saying "My spear is sharp, there is nothing it cannot pierce." To this an onlooker asked " if you were to try and pierce your shield with your spear, what would happen?" To this the man had no answer.
So a shield that cannot be pierced and a spear that can pierce anything cannot exist at the same instance.
自我矛盾
楚人有鬻盾与矛者, 誉之曰: “吾盾之坚,无莫能陷也。” 又誉其矛曰:“无矛之利,于物无不陷也。” 或曰:“以子之矛,陷子之盾,何如?”其人佛能应也。夫不可陷之盾,与无不陷之矛,不可同世而立。
A man from the country of chu was selling spears and shields, he praised his wares saying "My shield is strong, there is nothing that can pierce it." He also praised his spear, saying "My spear is sharp, there is nothing it cannot pierce." To this an onlooker asked " if you were to try and pierce your shield with your spear, what would happen?" To this the man had no answer.
So a shield that cannot be pierced and a spear that can pierce anything cannot exist at the same instance.