analogia entis
In my gift-ontology, the analogia entis is the rule that creatures are truly like God because they come from God, yet are always more unlike God in their mode of being than they are like him in any measurable respect. It is therefore not a weak compromise between likeness and unlikeness, but the formal discipline that makes Catholic metaphysics possible. It preserves the Creator-creature distinction while still allowing real participation, real likeness, and true predication. Without it, one falls either into univocity, where God and creatures are placed on a common scale, or into equivocity, where no real likeness or truthful speech remains.
Within this framework, the analogia entis is especially important for relational language. It forbids exporting divine relationality univocally into creatures. In God, relationality is proper, absolute, and unsurpassable, because the relations of origin are subsistent and really identical with the one divine essence. The Father, Son, and Holy Spirit are not related in the way creatures are related. Their relations do not inhere in a substrate, do not arise within a common field, and are not added determinations of a deeper subject. In creatures, by contrast, relationality is real and pervasive, but always founded, participated, finite, and ordered within created natures and histories. Creaturely relations are received, not self-subsisting. They depend upon God as source, measure, and end.
The analogia entis therefore secures what may be called a two-level relational claim. In God, relation is personal origin-fromness: paternity, filiation, and spiration, subsisting in the one simple divine life. In creatures, relation is derivative and participated: source, dependence, provenance, communion, mediation, and return. The likeness is real, because creatures truly receive and reflect what comes from God. But the unlikeness is always greater, because divine relationality is identical with essence, whereas creaturely relationality is always finite, caused, and non-simple. In this way the analogia entis protects both sides at once: it lets gift-ontology speak strongly of participation and relation, while forbidding every collapse of God and creature into one mode of being. Przywara is one of the most penetrating modern guides to this point, because he shows with unusual force that the whole creaturely order stands under the law of likeness within ever greater dissimilarity.