For Marxist philosophy, in so far as it still forms an independent reflection upon the concepts that inform a Marxist practice, dialectics involves the conscious interception of the object in its process of development where the object is man's production of history. The ultimate possibility of human self-liberation is grounded in the postulate that man is a world-producing being. For Hegel, from whom Marx derived the dialectic, philosophy remained a speculative affair, a set of ideas remote from human praxis. Marx sought to actualize the philosophical interception as a practical interception, to abolish concretely the historical alienation of man from his species nature, an alienation viewed speculatively by the Hegelians. In the practical...