In the hundred years beginning with the last third of the eighteenth century, radical changes took place in the economic, political, and social structure of Europe, particularly in the western countries. Nowhere were these changes more profoundly felt than in the Jewish communities. At the beginning of this period Jews lived as isolated strangers in surrounding Gentile societies; at the end they were citizens. Not only had their legal status changed but also their cultural habits, occupational distribution, religious outlook, and behavior. Jacob Katz's account of this transformation of Jewish life is unique in its breadth and objectivity. He presents the story of Jewish emancipation as a whole, from both Jewish and non-Jewish points of view and as a process that was inter-related from country to country even though details differed. He is concerned with the underlying forces: the great upheaval of the French Revolution, the loosening of bonds between church and state, and the ideas of the Enlightenment. It was those rationalistic and humanistic ideas which made possible Gentile society's acceptance of the Jews and which attracted Jewish intellectuals to the "secular knowledge"of languages, mathematics, philosophy and the wider world beyond their ancient learning. The transition from the ghetto to partial inclusion in society-at-large was no-where a smooth process. The political and social aspects of the problem were passionately debated in legislative bodies and among the people on both sides. At this time the modern dilemma of the Jewish community emerged: that of adapting to the surrounding culture without loss of Jewish identity. The fears, on both sides, of corruption by association were plainly stated. In reviewing this chapter of history, Prof. Katz uses a broad sociological approach which takes into consideration factual and ideological factors not previously applied to this subject. He considers the interplay between changes in conditions, alterations in types, and shifts in institutions on the one hand, and a reshaping of ideas, images, and stereotypes on the other. The latter process, as he points out, is generally slower than the former and is, indeed, still continuing today. It is precisely because many of the debates reviewed in this book have not yet been wholly resolved that this chapter of history has such relevance to contemporary problems.