This study examines the critical ideologies that have shaped the perception, reception, and projection of Old Yiddish during the course of the past century. The first critical, historical survey of the history of scholarship in the field, it confronts the assumptions underlying the research—assumptions of cultural identity and the value of the literature of that culture. It documents the pervasive denial that Yiddish is a language and that Yiddish literature is intrinsically valuable, or the assertion that this literature is German and a product of German culture.