  Rosenzweig’s renown, especially in Jewish and Christian intellectual circles, stems in large part from a fascination with his compelling biography, a biography that included a near-conversion to Christianity, an inspired return to Judaism, the composition of the beginning of his magnum opus on military postcards sent home from the Balkan front, the abandonment of a promising academic career in order to live and teach in the Frankfurt Jewish community, and his heroic efforts to continue his thinking, writing, and communal work after succumbing to the paralysis brought on by ALS. But Rosenzweig’s singular philosophical importance rests almost entirely on his having written what is arguably the greatest work of modern Jewish philosophy: The Star of Redemption. The Star is a system of philosophy that seeks to give a comprehensive and ramified account of “All” that is, and of the human being’s place within that “All”. It is a system in which “revelation” plays a vital conceptual and methodological role, and in which Judaism and Christianity are claimed to offer glimpses, each through the course of its liturgical calendar, of the redemptive unity of the “All” which the philosopher seeks to know.