PREFACE

and mediæval superstition. Yet, whilst condeming the persecution to which the Jews were subjected on this account, it must be admitted that they laid themselves open to suspicion by their real addiction to magical arts. If ignorant superstition is found on the side of the persecutors, still more amazing superstition is found on the side of the persecuted. Demonology in Europe was in fact essentially a Jewish science, for although a belief in evil spirits existed from the earliest times and has always continued to exist amongst primitive races, and also amongst the ignorant classes in civilized countries, it was mainly through the Jews that these dark superstitions were imported to the West, where they persisted not merely amongst the lower strata of the Jewish population, but formed an