"This small but important book by Rabbi Dr. Isidore Epstein, the distinguished Principal of Jews' College, London, and author of a number of significant works on Judaism, is intended alike for the young and the adult eager to know the "whys" and "wherefores" of the Jewish Religion. Written with deep learning and yet in an easy and penetrating style, the book leads the reader "step by step" through the essential teachings of Judaism. From Hillel's famous first principle "What is hateful to you, do not unto your fellow", the work proceeds logically through the rules of JUSTICE, RIGHTEOUSNESS and LOVE to the goal of HOLINESS with which everything in Jewish life should be infused. Each step is explained by means of simple illustrations taken from everyday life and illumined by appropriate quotations from the Bible and the Talmud, as well as from other sources. The moral duties and religious observances of Judaism, as well as its fundamental beliefs, are described, interpreted and so interlinked with each other as to form a beautiful and harmonious pattern."