However, his contemporary, Leibnitz, the father of the German enlightenment, who created an optimistic world-picture, always remained only a philosopher for philosophers. Even Immanuel Kant, although always famous, was never popular. In his own fatherland he was all but forgotten for most of the nineteenth century until revived by Hermann Cohen and his school. Spinoza, however, was never exhumed because he was never buried. Kant, because of his exclusive intellectuality, has influenced only his students, while Spinoza, because of his emotional appeal, has ruled even those who have never heard his name.