The real connection appears to be the racial one. Among the Mediterranean Neolithic tribes of Sumeria, Arabia, and Europe, the goddess cult appears to have been influential. Mother worship was the predominant characteristic of their religious systems, so that the Greek goddesses were probably of pre-Hellenic origin, the Celtic of Iberian, the Egyptian of proto-Egyptian, and the Babylonian of Sumerian. The northern hillmen, on the other hand, who may be identified with the "Aryans" of the philologists, were father worshippers. The Vedic Aryo-Indians worshipped father gods,[138] as did also the Germanic peoples and certain tribes in the "Hittite confederacy". Earth spirits were males, like the Teutonic elves, the Aryo-Indian Ribhus, and the Burkans, "masters", of the present-day Buriats, a Mongolian people. When the father-worshipping peoples invaded the dominions of the mother-worshipping peoples, they introduced their strongly individualized gods, but they did not displace the mother goddesses. "The Aryan Hellenes", says Dr. Farnell, "were able to plant their Zeus and Poseidon on the high hill of Athens, but not to overthrow the supremacy of Athena in the central shrine and in the aboriginal soul of the Athenian people."[139] As in Egypt, the beliefs of the father worshippers, represented by the self-created Ptah, were fused with the beliefs of the mother worshippers, who adored Isis, Mut, Neith, and others. In Babylonia this process of racial and religious fusion was well advanced before the dawn of history. Ea, who had already assumed manifold forms, may have originally been the son or child lover of Damkina, "Lady of the Deep", as was Tammuz of Ishtar. As the fish, Ea was the offspring of the mother river. The mother worshippers recognized male as well as female deities, but regarded the great goddess as the First Cause. Although the primeval spirits were grouped in four pairs in Egypt, and apparently in Babylonia also, the female in the first pair was more strongly individualized than the male. The Egyptian Nu is vaguer than his consort Nut, and the Babylonian Apsu than his consort Tiamat. Indeed, in the narrative of the Creation Tablets of Babylon, which will receive full treatment in a later chapter, Tiamat, the great mother, is the controlling spirit. She is more powerful and ferocious than Apsu, and lives longer. After Apsu's death she elevates one of her brood, named Kingu, to be her consort, a fact which suggests that in the Ishtar-Tammuz myth survives the influence of exceedingly ancient modes of thought. Like Tiamat, Ishtar is also a great battle heroine, and in this capacity she was addressed as "the lady of majestic rank exalted over all gods". This was no idle flattery on the part of worshippers, but a memory of her ancient supremacy.