The fundamental task of Filosofía de la realidad histórica (Philosophy of Historical Reality) is to put forth historical reality as the ultimate manifestation of reality, as the proper object of philosophy. Ellacuría develops the concept of historical reality as the synthesis of the Hegelian-Marxian dialectic and Xavier Zubiri’s radicalization of Scholastic realism. Historical reality is physical, not conceptual; material, not ideal; concrete, not abstract. Historical reality encompassesthe material, biological, individual, and social moments of reality. And when it is considered in its totality, as a dynamic and differentiated structure of its moments, functions, and relations, historical reality forms a transcendental system—intramundane metaphysics.