3. Such a habit of fixity among the early races, whose position secured them from disturbance by the more restless tribes, was favorable to the construction of the stupendous monuments which have been the wonder of after ages. All those races have been remarkably exclusive. It was not until nearly four hundred years after the era of authentic history that Egypt was freely open to all the Greeks. These observations apply only to those portions of the human family which were stranded in some quiet nook outside of the current of movement that carried along the most of mankind. Change of place, intercourse, conflict and conquest were the chief early educators. The isolated nations, after exhausting the power of their first impulses, ceased to improve. Their minds, institutions and habits stiffened and petrified. Nor did the families that wandered far from the general centre of movement usually acquire any high degree of development. They were characterized by unsettled habits; not favorable to highly organized institutions. 4. It was around, and westward of, the common centre of the race that a course of steady improvement went on. Here the laws of inheritance and suggestion, the stimulus of constant friction, and the infusion of newer and more enterprising blood worked the freest and developed the elements of a true civilization the soonest. If the legendary history of Greece is not to be trusted in its details, it at least establishes the certainty of active movement and incessant conflict out of which was, at length, evolved a noble, if incomplete, civilization. The Greeks were near enough to the scene of stirring action in Western Asia to be benefited by its influence without having their institutions frequently disturbed and broken up before they had reached any degree of maturity, as was the case with the Assyrians, Persians and Phenicians. They reaped the fruit, without sharing the disasters, of the great surgings back and forward which we find to have been the condition of the Asiatic peoples at the time reliable history begins to observe them. It appears to have been the same in that region (Western Asia) as far back as monument, legend, or science can trace. The fruit of this shock of races and mental activity matured on the spot the greatest and best religious systems the world has ever known, the three greatest of which have survived to our own day, viz.: the Judaic, the Christian and the Mohammedan. The germs of the other two were contained in the system of Abraham and Moses. Thus the three most important influences needed for the progress of civilization in the true direction were supplied in pre-historic times—the seething and surging of the nations in the West of Asia, a high religious ideal, and the primary discipline of the Greeks.