Revisiting Ontology to Reshape Transgenerational Justice

ABSTRACT This article develops a philosophical framework for understanding transgenerationality as a foundational concept for intergenerational justice. Drawing on social ontology and the philosophy of action, it introduces the notion of transgenerational civitas —a temporally extended community composed of past, present and future generations. The paper argues that transgenerational actions, characterised by epistemic and agentic asymmetries, require a diachronic conception of justice that moves beyond reciprocity. By integrating ontological commitments with normative reasoning, the article proposes a model of vertical justice capable of addressing long‐term collective responsibilities and mitigating the populist risks inherent in democratic systems.