Abstract
In this article, we pursue the definition of an ontological framework and a species of ontologies called “epistemic ontologies” by focusing on the complex entities, physical and mental, that populate the world. These entities unify other entities on which they unilaterally existentially depend. These complex entities include states of affairs (in the physical sphere) and propositions and events (in the mental sphere). To account for their unity, we appeal to the ontological figure of ‘connection’, in reference to Gustav Bergmann's notion of nexus. On the physical side, we identify different kinds of connections, namely connections of particular qualities to their carrier object, and connections of objects and processes to each other. We conjecture that physical states of affairs are exclusively connections. On the mental side, we equate relations with the conceptual constituents of our knowledge of the world, whose role is to put together entities. We conjecture that there are no physical relations.