Judah Halevi’s Sefer ha-Kuzari (Book of the Kuzari/Book of the Khazars; composed in Spain ca. 1140) is a large-scale outline and defense of rabbinic Judaism. The work was an iconic point of reference up until the modern era for Jews of the most diverse cultures, movements, and spiritual currents. In the Middle Ages and early modern era, the Kuzari was simultaneously seen as an anti-rationalist, anti-philosophical text and as…