In this volume, 11 leading scholars contribute to the understanding of the scientific and philosophical works of Moses Maimonides (1135-1204), the most luminous Jewish intellectual since Talmudic times. Deeply learned in mathematics, astronomy, astrology (which he strongly rejected), logic, philosophy, psychology, linguistics, and jurisprudence, and a practising physician, Maimonides flourished within the high Arabic culture of the 12th century, where he had momentous influence upon subsequent Jewish beliefs and behaviour, upon ethical demands, and upon ritual traditions. For him, mastery of the sciences was indispensable in the process of religious fulfilment.