The excitement soon evaporated. When the noise of the liberty love-feasts had subsided, when the cruel reaction (after 1814) had settled heavily upon the Europe of the nineteenth century, and God's earth had again become the arena of those agents of darkness whom dreamers had thought buried forever beneath the ruins of the old order, then the German Jews, or such of them as thought, came to their senses. The more intelligent Jewish circles realized that, in devotion to the German national movement, they had completely neglected their own people. Yet their people, too, had needs, practical or spiritual, had its peculiar national sphere of activity, circumscribed, indeed, by the larger sphere of mankind's activities as by a concentric circle, but by no means merged into it. To atone for their sin, thinking Jews retraced their steps. They took in hand the transforming of Jewish inner life, the simplification of the extremely complicated Jewish ritual, the remodeling of pedagogic methods, and, above all, the cultivation of the extended fields of Jewish science, whose head and front is Jewish historical research in all its vastness and detail. Heine's friend, Zunz, laid the cornerstone of Jewish science in the second decade of the nineteenth century. His work was taken up by a goodly company of zealous and able builders occupied for half a century with the task of rearing the proud edifice of a scientific historical literature, in which national self-consciousness was sheltered and fostered. At the very height of this reforming and literary activity, German Jewry was overwhelmed by the civil emancipation of 1848. Again a stirring movement drew them into sympathy with a great general cause, but this time without drawing them away from Jewish national interests. Cultural and civil assimilation was accomplished as an inner compelling necessity, as a natural outcome of living. But spiritual assimilation, in the sense of a merging of Judaism in foreign elements, was earnestly repudiated by the noblest representatives of Judaism. It was their ideal that universal activity and national activity should be pursued to the prejudice of neither, certainly not to the exclusion of one or the other, but in perfect harmony with each other. In point of fact, it may be asserted that, in spite of a frequent tendency to go to the one or the other extreme, the two currents, the universal and the national, co-exist within German Jewry, and there is no fear of their uniting, they run parallel with each other. The Jewish genius is versatile. Without hurt to itself it can be active in all sorts of careers: in politics and in civil life, in parliament and on the lecture platform, in all branches of science and departments of literature, in every one of the chambers of mankind's intellectual laboratory. At the same time it has its domestic hearth, its national sanctuary; it has its sphere of original work and its self-consciousness,