The ArgumentYehuda Halevi'sKuzariwas written in response to the challenge posed to Judaism by a highly spiritual, nondenominational philosophy. Science, especially that embodied in the Hellenistic heritage, was a major component of philosophy; thus, if for no other reason than to make Judaism a serious competitor, Halevi had to show that the Jewish tradition as well possessed a body of scientific knowledge. The superiority of the Jewish teachings was demonstrated chiefly by appeal to the criteria of tradition, consensus, and authority, which, (...) in Halevi's judgement, were in practice the criteria most influential in deciding scientific opinion. Despite the rather unique setting for the book, and the wide range of stances Halevi develops, theKuzariwas rather quickly and smoothly absorbed into the mainstream of Jewish religious thought. (shrink)

This paper examines the astrological and religious thinking of Moshe ben Nahman (also known as Ramban or Nahmanides) and the intellectual connections in this field with two of the most outstanding Christian thinkers of his time, Ramon Llull and Arnau de Vilanova. Nahmanides, like many medieval scholars, admitted an astral influence, but he did not accept astrology as a divinatory science. He incorporated astrological doctrines in his exegetical works, assuming that Israel is not determined by any star because it only (...) responds to God. Yet the study of medieval medicine and its application cannot be separated from astrology practice because it was considered that the stars had a direct influence not only on the development of the human body, from birth to death, but also in the disease processes which affect it. Ramban and his disciple Solomon ben Adret accepted and practiced astrological medicine. Llull and de Vilanova also devoted themselves to this discipline. All of them agree on the influence of the stars on humankind but condemned astral magic. Like Ramban, Llull rejects other astrological methods considered non-scientific in his time, such as prediction through horoscope. Thus, these thinkers tried to develop an astrology that was not in contradiction with divine omnipotence or free will. (shrink)