It is at once a Jewish book and a philosophical one: Jewish because it takes its material from the literary tradition that extends from the Bible to the rabbis to the great medieval philosophers; philosophical, because it studies that material in order to construct a worldview that is rational in the broadest sense of the term. This edition is designed for classroom use. It reprints a 1972 introduction by Leo Strauss and includes an essay on the work by Steven Schwarzschild. A new introduction by Kenneth R.