The Asiatic and African races, the posterity of Sem and Cham, appear in our days destitute of all energy, and incapable not only of ruling over foreign races, but even of standing alone and escaping a foreign yoke. It has not been so from the beginning. There was a period of wonderful activity for them. Asia and Africa for many ages were in turn the respective centres of civilization and of human history; and the material relics of their former energy still astonish all European travellers who visit the Pyramids of Egypt, the obelisks and temples of Nubia and Ethiopia, the immense stone structures of Arabia, Petraea and Persia, as well as the stupendous pagodas of Hindostan. How, under a burning sun, men of those now-despised races could raise structures so mighty and so vast in number; how the ancestors of the now-wretched Copt, of the wandering Bedouin, of the effete Persian, of the dreamy Hindoo, could display such mental vigor and such physical endurance as the remains of their architectural skill and even of their literature plainly show, is a mystery which no one has hitherto attempted to solve. Nothing in modern Europe, where such activity now prevails, can compare with what the Eastern and Southern races accomplished thousands of years ago. Ethiopia, now buried in sand and in sleep, was, according to Heeren, the most reliable observer of antiquity in our days, a land of immense commercial enterprise, and wonderful architectural skill and energy. In all probability Egypt received her civilization from this country; and Homer sings of the renowned prosperity of the long-lived and happy Ethiopians. It is useless to repeat here what we have all learned in our youth of Babylon and Nineveh, in Mesopotamia; of Persepolis, in fertile and blooming Iran; of the now ruined mountain-cities of Idumaea and Northern Arabia; of Thebes and Memphis; of Thadmor, in Syria; of Balk and Samarcand, in Central Asia; of the wonderful cities on the banks of the Ganges and in the southern districts of the peninsula of Hindostan. That the ancestors of the miserable men who continue to exist in all those countries were able to raise fabrics which time seems powerless to destroy, while their descendants can scarcely erect huts for their habitation, which are buried under the sand at the first breath of the storm, is inexplicable, especially when we take into consideration the principles of the modern doctrine of human progress and the indefinite perfectibility of man.