He promised the Athenians a yet more lucrative, if less glorious enterprise than that against the Persians, and demanded a fleet of seventy ships, with a supply of men and money, for an expedition from which he assured them he was certain to return laden with spoil and treasure.

He did not specify the places against which the expedition was to be directed; but so great was the belief in his honesty and fortune, that the Athenians were contented to grant his demand.

The requisite preparations made, Miltiades set sail.
Assuming the general right to punish those islands which had sided with the Persian, he proceeded to Paros, which had contributed a trireme to the armament of Datis.

But beneath the pretext of national revenge, Miltiades is said to have sought the occasion to prosecute a selfish resentment.

During his tyranny in the Chersonese, a Parian, named Lysagoras, had sought to injure him with the Persian government, and the chief now wreaked upon the island the retaliation due to an individual.
Such is the account of Herodotus--an account not indeed inconsistent with the vindictive passions still common to the inhabitants of the western clime, but certainly scarce in keeping with the calculating and politic character of Miltiades: for men go backward in the career of ambition when revenging a past offence upon a foe that is no longer formidable.
Miltiades landed on the island, laid vigorous siege to the principal city, and demanded from the inhabitants the penalty of a hundred talents.