The earliest seats of mental culture were the great valleys of Egypt and Mesopotamia. There, too, were the cradles of primitive art. The less enduring materials of the Eastern valley have deprived us of the remains of its earlier architecture, but the imperishable ruins of Egypt will tell till earth’s closing day how mighty was her primæval civilisation. Persia seems to have succeeded to Egypt and Assyria as well in art as in dominion; but long before her political power had been overthrown, the stream of mental power had been transferred to Greece, whose arts and knowledge, partly indigenous and partly derived from Egypt and Assyria, so infinitely excelled all which had preceded them, that we are apt, and with reason, to view them as the only genuine art and civilisation of the ancient world. Rome, succeeding Greece in external power, borrowed both her arts and literature, but, throughout her whole career, was as subordinate to her in these as she was predominant in power; and when that great catastrophe occurred which crushed to dust the mighty fabric of Roman domination, it was again in Greece that civilisation and art flowed on, and it was thence that those friendly streams proceeded which enabled the Gothic conquerors of Rome to reconstruct what they had destroyed, and among the _débris_ of ancient art and knowledge to sow the seeds and to foster the growth of that richer and mightier civilisation which distinguishes the modern from the ancient world. In all its earlier stages, the growth of civilisation in the modern, as in the ancient world, was marked by corresponding changes in its architecture. Each age had its architectural style distinctly and strongly marked; a style which, though connecting itself unmistakeably with the long chain of ancient art that, though rudely broken in the West, had been continuous in the Eastern empire, was nevertheless so distinct from any former link in that chain as clearly to mark a new dynasty in human affairs, and to show that the stream which had passed successively through Egypt, Assyria, Persia, Greece, and Rome, was now making wide and deep its channel among those Gothic nations whose progenitors had been viewed as the enemies of art and knowledge, and that the seat of art was henceforth to be established among those vigorous races which had destroyed that of the ancient world.