In the East an Aryan Power overthrew the last of the Assyrian-Babylonian dynasties; but these Persian conquerors became assimilated to the conquered nations. Fundamentally their empire was of the same type as its predecessors. The Persian sway, however, extended not only into Egypt but over the partly Hellenised Asia Minor; and the Ionic revolt, in the first year of the fifth century B.C. brought the spirit of the East and the spirit of the West into fierce collision. The great king hurled his hosts against defiant Hellas; at Marathon and at Salamis, Athens shattered his army and his fleets. Thenceforth, for a thousand years, the West was the aggressor. [Sidenote: Athens and the Greek Immortals] But the rolling back of the “barbarian” tide was not the only glory that fell to Athens; in that same century the little state bore sons whose names stand in the front rank of the immortals for all time: Æschylus and Sophocles, Phidias, Pericles, Socrates, and Plato; in the next half century, Demosthenes; with others almost if not quite, on the same plane. The character of Athens, idealised, no doubt, is epitomised by Thucydides in the speech of Pericles. She was the sum of all that was best and noblest in Hellenism--its love of freedom, of beauty, of energy, of harmony, and its public spirit. Politically, the story of the period which followed Salamis is mainly one of the rivalry between Athens and Sparta; until the rise of Macedon, when King Philip made himself master of all Hellas. [Sidenote: The Coming-up of Alexander] Then, with the beginning of the last quarter of the fourth century, Alexander the Great blazed upon the world, toppled the empires of Western Asia before him, conquered Egypt, and swept over the great mountain-barriers into India, where Buddhism had already begun to displace the ancient Brahmanism of the first Aryans. The Greek influences did not long linger in the far East after the great conqueror’s death. His empire broke up. Asia west of the Euphrates remained, indeed, under the dominion mainly of one Grecian dynasty, the Seleucidæ; Egypt under that of another, the Ptolemies. Yet Alexander’s attempts to blend East and West failed. Orientalism abode, unconquered, ineradicable; Hellenism prevailed almost after the fashion of British domination in India to-day, in the land, but not of it.