““This theory, which would make all the Neolithic inhabitants of Egypt one people, who were conquered by a Semitic race, bringing a culture of Sumerian origin to Egypt by way of the Wadi Hammamat, is that generally accepted at the present time. It may, however, eventually prove necessary to modify it. For reasons given above, it may well be that the Neolithic population was itself not indigenous, and that it reached the Nile valley by way of the Wadi Hammamat, spreading north and south from the mouth of the wadi. It may also be considered probable that a Semitic wave invaded Egypt by way of the Isthmus of Suez, where the early sun-cultus of Heliopolis probably marks a primeval Semitic settlement.””
