Franz Rosenzweigs The Star of Redemption is best understood as a rational subjective system and as such as the redemptive turning point in philosophy and theology in general. In asserting Rosenzweigs essential commitment to a new systematic conception of thinking as the most basic deepest and comprehensive intellectual procedure Franz Rosenzweigs Rational Subjective System sheds light on the extensive method of the Star and shows it to be rooted in a fundamental rethinking of the methodological and logicalmetaphysical resources of Kant most especially of the transcendent metaphysics of the psychological cosmological and theological substances i.e. the threefold nothing or entia rationis. The true radicality and originality of Rosenzweig Bontas claims is the exposition of the rational subjective approach to substance and knowledge on the logical form of the hypothetical thought i.e. the modal relation of logical consequence between original and nonnatural ground and phenomenal consequence that positively establishes the wholly final and nonideal destinations of redemption which valorizes the alliance between pure reason and revelation disrupted by the Kantian epistemology. The title The Star of Redemption indicates exactly this long rational and not exclusively mundane new systematic principle of coherent and reliable knowledge which is ultimately shown to be true and right from a selfexamining subjective perspective and thereby justified.