Persia, too, was waiting for that Greek military cycle; until it
should rise, however, something had to be going on in West Asia.
The Athenian first half-cycle--sixty-five years from the
inception of the hegemony--ended in 413, when the Peloponnesian
War entered its last, and for Athens, disastrous, phase. Another
half-cycle brings us to the rise of Philip; who about that time
became dominant in Greece. But not yet had a power consolidated,
which could contest with Persia the hegemony of the world.
Having enabled Sparta to put down Athens, the western satraps
turned their attention to finding those who should put down
Sparta. Corinth, Thebes, Argos and Athens were willing; and
Pharnabazus financed them for war in 395. A year after, he and
Conon destroyed the Spartan fleet. In 387 came the Peace of
Antalicidas, by which Persia won what Xerxes had fought for of
old; the suzerainty of Greece. But she was not strong; her
cycle was long past; she stood upon the wealth and prestige of
her better days, and the weakness of her contemporaries.
Internally she was falling to pieces until Artaxerxes Ochus,
between 362 and 338, wading through blood and cruelty, restored
her unity, wore out her resources, and left her apparently as
great as under Xerxes, but really ready to fall at a touch. He
prepared the way for Alexander.

So ended an impulse that began, who knows when? on a high
spiritual plane in the pure religion of the Teacher we call
Zoroaster; a high system of ethics expressed in long generations
of clean and noble lives. From that spirituality the impulse
descending reached the planes of intellect and culture; with
results we cannot measure now; nothing remains but the splendor