The appearance of religious toleration combined with the intensification of the search for theological truth led to a unique phenomenon in early modern Europe: Jewish Christians and Christian Jews. These essays will demonstrate that the cross-fertilization of these two religions, which for so long had a tradition of hostility towards each other, not only affected developments within the two groups but in many ways foreshadowed the emergence of the Enlightenment and the evolution of modern religious freedom.

Some scholars in the history of ideas have had a growing interest in examining Leibniz's many discussions ofvarious aspects of religion, Christian, Jewish and far eastern. Leibniz, with his voracious interest and concern for so many aspects of human intellectual and spiritual life, read a wide variety of books on the various religions of mankind. He also was in personal contact with many of those who espoused orthodox and non-orthodox views. He annotated his copies of many books on religious subjects. And he was working on schemes for reuniting the various Catholic and Protestant churches in...