Existence, Logic, and Truth

Philosophical discussions of existence, logic, and truth have typically proceeded within separate domains. Ontology investigates what exists, logic studies valid reasoning, and theories of truth analyze the conditions under which propositions are true. Despite their central importance, the structural relations among these concepts remain unclear. This paper argues that their relation is hierarchical rather than symmetrical. Existence provides the fundamental domain within which propositions can arise. Structure organizes this domain into stable relational patterns. Logic articulates the constraints governing these relations, and truth emerges as the evaluative status of propositions that successfully represent them. By developing this hierarchical model—existence, structure, logic, and truth—the paper clarifies how logical articulation and truth evaluation ultimately presuppose an ontological foundation.