Breaking new ground in the study of Spinoza's philosophy, the essays in this volume explore the extent to which Spinoza may be considered a Jewish thinker. The rich diversity of Spinoza scholarship today is represented here by a wide range of intellectual methods and scholarly perspectives—from Jewish philosophy and history, to Cartesian-analytic and Continental-Marxist streams of interpretation, to the disciplines of political science and intellectual history. Two questions underlie all the essays: How and in what measure is Spinoza's a Jewish philosophy, and what is its impact on the project of Jewish philosophy as a living enterprise now and for the future? The contributors' varied perspectives afford a highly nuanced vision of the multifaceted Judaic tradition itself, as refracted through the Spinozist lens. What draws them together is the quest for enduring insights that emerge from the philosophy of Spinoza.