Two Meanings of 'is': Heidegger's Horizon and the Crossing Point

This essay argues that Martin Heidegger correctly recovered the question of Being, but that temporal horizon does not suffice as ontological ground. Granting the phenomenological force of Heidegger’s analysis of finitude, thrownness, and Being-toward-death, the paper distinguishes the problem of intelligibility from the problem of sustenance. In place of a horizon-based model, it proposes a center-based account in which the Now functions as the invariant condition of actualization. The argument then relates this framework to classical metaphysical accounts in Aristotle, Thomas Aquinas, and the Exodus formula “I AM WHO I AM.”