Pioneering biblical critic, theorist of democracy, and legendary conflater of God and nature, Jewish philosopher Baruch Spinoza (1632-1677) was excommunicated by the Sephardic Jews of Amsterdam in 1656 for his "horrible heresies" and "monstrous deeds." Yet, over the past three centuries, Spinoza's rupture with traditional Jewish beliefs and practices has elevated him to a prominent place in genealogies of Jewish modernity. The First Modern Jew provides a riveting look at how Spinoza went from being one of Judaism's most notorious outcasts to one of its most celebrated, if still...