it is impossible to separate Italy from Spain, France from Germany, Persia from Egypt, Constantinople from Amsterdam. This has induced other writers to propose a third method and to trace Influences, to indicate that, whereas Rabbinism may be termed the native product of the Jewish genius, the scientific, poetical, and philosophical tendencies of Jewish writers in the Middle Ages were due to the interaction of external and internal forces. Further, in this arrangement, the Ghetto period would have a place assigned to it as such, for it would again mark the almost complete sway of purely Jewish forces in Jewish literature. Adopting this classification, we should have a wave of Jewish impulse, swollen by the accretion of foreign waters, once more breaking on a Jewish strand, with its contents in something like the same condition in which they left the original spring. All these three methods are true, and this has impelled me to refuse to follow any one
