Book excerpt: The book is divided into three sections. The first provides a general historical overview for the Jewish thought that follows. The second summarizes the variety of basic kinds of popular, positive Jewish commitment in the twentieth century. The third and major section summarizes the basic thought of those modern Jewish philosophers whose thought is technically the best and/or the most influential in Jewish intellectual circles. The Jewish philosophers covered include Spinoza, Mendelssohn, Hermann Cohen, Martin Buber, Franz Rosenzweig, Mordecai Kaplan, and Emil Fackenheim. The text includes summaries and a selected bibliography of primary and secondary sources.