This work, written from the standpoint of Hegel's Logic, examines the nature, conditions of possibility and scope of a valid dialectical logic. For this purpose it scrutinizes, criticizes and reconstructs it so that it may serve as a logic of Human reality. Refusing to be 'revisionist' as far as Natural Sciences are concerned, the proposed viewpoint asserts that in this domain Dialectic is incapable of great fruitfulness -- there is no 'Dialectic of Nature'. As for the domain of Human reality -- as historical, social and cultural reality -- the book suggests that such a reconstructed ...