Abstract
By means of an analysis of Nicolai Hartmann's thought, the author attempts to show that his and, indeed, all ontological projects are unable to develop criteria showing why a certain ontology should be preferred over another. The reason for this is sought in the "gnoseo-ontological circle"--the fact that all attempts to state such criteria already imply a commitment to a certain ontology. It is impossible to appeal beyond this circle. Consequently, the only remaining choice is between skepticism and the path which Heidegger has pointed out, a path which leads beyond all ontology. Bold though it is, the argument is developed with great clarity.--K. H.