her army at Syracuse[3] was only the foremost of a series of inevitable
disasters, which left her helpless. After that, Sparta, and then Thebes,
became the leading city of Greece. Athens slowly regained her fighting
strength; her intellectual supremacy she had not lost. Socrates,[4]
greatest of her sons, endeavored to teach a morality higher than earth
had yet received, higher than his contemporaries could grasp. Plato gave
to thought a scientific basis.

[Footnote 3: See _Defeat of the Athenians at Syracuse_, page 48.]

[Footnote 4: See _Condemnation and Death of Socrates_, page 87.]

Then Macedonia, a border kingdom of ancient kinship to the Greeks, but
not recognized as belonging among them, began to obtrude herself in
their affairs, and at length won that leadership for which they had all
contended. A hundred and fifty years had elapsed since the Greeks had
stood united against Persia. During all that time their strength had
been turned against themselves. Now at last the internecine wars were
checked, and all the power of the sturdy race was directed by one man,
Alexander, King of Macedon. Democracy had made the Greeks intellectually
glorious, but politically weak. Monarchy rose from the ruin they had
wrought.

As though that ancient invasion of Xerxes had been a crime of yesterday,
Alexander proclaimed his intention of avenging it; and the Greeks
applauded. They understood Persia now far better than in the elder days;
they saw what a feeble mass the huge heterogeneous empire had become.
Its people were slaves, its soldiers mercenaries. The Greeks themselves
had been hired to suppress more than one Persian rebellion,[5] and to
foment these also. They had learned the enormous advantage their