II. The composite formations: a) The Gaonic period, or the hegemony of the Oriental Jews (500-980). b) The Rabbinic-philosophical period, or the hegemony of the Spanish Jews (980-1492). c) The Rabbinic-mystical period, or the hegemony of the German-Polish Jews (1492-1789). d) The modern period of enlightenment (the nineteenth century). V THE PRIMARY OR BIBLICAL PERIOD In the daybreak of history, the hoary days when seeming and reality merge into each other, and the outlines of persons and things fade into the surrounding mist, the picture of a nomad people, moving from the deserts of Arabia in the direction of Mesopotamia and Western Asia, detaches itself clear and distinct from the dim background. The tiny tribe, a branch of the Semitic race, bears a peculiar stamp of its own. A shepherd people, always living in close touch with nature, it yet resists the potent influence of the natural phenomena, which, as a rule, entrap primitive man, and make him the bond-slave of the visible and material. Tent life has attuned these Semitic nomads to contemplativeness. In the endless variety of the phenomena of nature, they seek to discover a single guiding power. They entertain an obscure presentiment of the existence of an invisible, universal soul animating the visible, material universe. The intuition is personified in the Patriarch Abraham, who, according to Biblical tradition, held communion with God, when, on the open field, "he looked up toward heaven, and counted the stars," or when, "at the setting of the sun, he fell into benumbing sleep, and terror seized upon him by reason of the impenetrable darkness." Here we have a clear expression of the original, purely cosmical character of the Jewish religion.