Material objects extend through space by having different spatial parts in different places. But how do they persist through time? According to some philosophers, things have temporal parts as well as spatial parts: accepting this is supposed to help us solve a whole bunch of metaphysical problems, and keep our philosophy in line with modern physics. Other philosophers disagree, arguing that neither metaphysics nor physics give us good reason to believe in temporal parts.

I reconsider in this article the problem of the Holy Trinity from the standpoint of some recent theories of the ontology of relations. After having presented the problem and after having introduced some basic ontological concepts, I shall briefly dwell on the ontology of non-symmetrical relations and on the O-Roles theory suggested by Francesco Orilia. Afterwards, I shall develop my own solution to the problem of the Holy Trinity by exploring the status of Intratrinitarian relations and of divine Persons. Among (...) other things, I shall defend the thesis that divine Persons are not substances, but peculiar modes of God. I shall also ground the distinction between the properties attributed to God himself and the ones attributed to specific divine Persons. Finally, I shall anticipate and face some objections against my account and argue that it is legitimate to maintain that there is no kind of persons in general—which is a consequence of my view. (shrink)