| There have been different opinions on the core or spiritual essence of dialectics in philosophy.Before Lenin,Marx and Engels didn’t express clearly in writing whether the core of dialectics is the law of unity of opposites or the law of negation of negation.Marx’s dialectics formed its own system in the transformation of Hegel’s dialectics.He transformed Hegel’s reason without God into human’s perceptual practice,which made the foundation of dialectics no longer the abstract expansion of absolute spirit,but based on practice and the dialectical framework of negation of negation to construct his own dialectics of labor practice on human liberation.This paper will mainly discuss the nature and core law of Marxist Dialectics in the sense of existentialism.It will discuss the spiritual essence and great change of Marxist dialectics from three aspects.Firstly,it will trace back the historical development of dialectics,secondly,it will focus on the negative framework of the negation of Marxist Dialectics of labor practice,and finally it will discuss the line of labor dialectics is a theory about human liberation and discusses its practical significance. |