The three-volume set gives new insights into Hegel's dialectics and thereby his overall philosophical thought via a retracing of the origins of dialectics and an analysis of its logic structure, with the concept of the Nous highlighted as fundamental to this. The first volume explores two origins of Hegelian dialectics from ancient Greek philosophy, namely the linguistic spirit of Logos and the existentialist spirit of Nous, before illuminating how their binary opposition, division and unification constitutes the inner tension of Hegel's dialectics and developing into the forms of thought that fashion the history of western philosophy. Focusing on self-negation and reflective form of dialectics, and representing spirits of Nous and Logos respectively, the second volume further explores their core functions in terms of subjectivity, free spirit and practicality. In the final volume, the author defines Hegel's dialectics as "a unity of three": logic, epistemology and ontology. This unification and the interrelation of three components demonstrates the internal feature of Hegel's dialectics as well as the connection and divergence between Hegel and Marx's philosophical thought. The set will appeal to scholars and students interested in Hegel and Marx's philosophy, German classical philosophy and Western philosophy.