一切事物本身都是自在地矛盾的。——黑格尔……“甲不能同时为甲与非甲”。这种命题并非真正的思维规律,而只是抽象理智的规律。——黑格尔两个矛盾方面的共存、斗争以及融合成一个新范畴,就是辩证运动的实质。——马克思我们要从黑格尔辩证法中砍掉多少东西才能达到它的“神秘外壳中的合理内核”呢?尤其是,黑格尔辩证法同形式逻辑的冲突是被马克思主义辩证法继承下来了呢,还是被它抛弃了?问题的关键在于对矛盾的看法。马克思基于矛盾之相互作用的观点对社会发展过程所作的解释,就是他的辩证法的必不可少的应用。马克思断言世界上存在着矛盾,这使他与形式逻辑的无矛盾律发生冲突了吗? 毫无疑问,继黑格尔之后,恩格斯认为辩证法同形式逻辑在某种程度上是互相抵触的: Everything is self-contradictory. - Hegel ... ... “A can not at the same time A and non-A”. This proposition is not a true law of thought, but an abstract law of reason. - Hegel's two contradictions in the coexistence, struggle and integration into a new category, is the essence of dialectical movement. - Marx How much can we cut from the Hegelian dialectic to reach its “reasonable core in the mystical outer shell?” In particular, the clash of Hegelian dialectics with formal logic is inherited by Marxist dialectics , Or is it abandoned? The crux of the problem lies in the conflicting view. Marx's explanation of the process of social development based on the contradictory perspective of interaction is an indispensable application of his dialectics. Marx asserted that there was a contradiction in the world, which made him conflict with the law of non-contradiction of formal logic? There is no doubt that after Hegel, Engels regarded dialectics and formal logic to some extent as contradicting each other: