The premise of this book, actually based on an article I published in 1982, is that rabbis can serve as indicators of the Orthodoxy they serve. In her examination of a once-dominant group within Orthodox Judaism, the so-called “Modern Orthodox,” Maxine Jacobson focuses on Rabbi Dr. Leo Jung, a German Jewish immigrant to America who became a prominent spokesman and exemplar of these Jews. Admitting that a precise definition of Modern Orthodoxy is elusive and that even many of those who came to be associated with this worldview and its allied behaviors were uncomfortable with the term (nor did they all agree on its parameters), Jacobson falls back on metaphor: “The Modern Orthodox Jew has been pulled in two directions” (p. 10). Those two directions are defined by Jacobson as either “not religious enough” or “not modern enough” (p. 10). Effectively, Modern Orthodoxy hoped to harmonize these two opposites, having relationships of respect with non-Jews and embracing the larger surrounding open culture, while remaining conscientiously observant. In contrast, Jacobson notes, “the Ultra-Orthodox group seeks to exclude” all that is different from it (p. 11). Nothing new here. The many faces of Orthodoxy have been more or less defined, from almost the first days that Orthodox Jews were subject to critical analysis, by a variety of observers, including myself....