The openness of the human spirit to the totality of the real plays a central role in A. Millán-Puelles’s thought. This thesis is based on the existente of an ontological truth, i.e., in the affirmation of the intelligibility of the real, which does not depend on its being an object of representation on the part of the spirit. Such an fairmation makes it posible to discover the tautological carácter of the thesis of the imánense of conciousness, as well as the inconsistency of every king of skepticism and relativism.