Is Judaism a religion, a culture, a nationality--or a mixture of all of these? In How Judaism Became a Religion, Leora Batnitzky boldly argues that this question more than any other has driven modern Jewish thought since the eighteenth century. This wide-ranging and lucid introduction tells the story of how Judaism came to be defined as a religion in the modern period--and why Jewish thinkers have fought as well as championed this idea.

Ever since the Enlightenment, Jewish thinkers have debated whether and how Judaism--largely a religion of practice and public adherence...