This saner view prevailed. The doctrine of a "ruling passion" is a remarkable contribution to Greek political thought, the abstract personifications reading like the work of a poet or philosopher. An exciting race against time is most graphically described. After great exertions the ship bearing the reprieve arrived just in time to save Mytilene. This act of mercy stands in sinister contrast with the treatment the unhappy Plataeans received from the liberators of Greece. The citizens were captured, Athens having strangely abandoned them in spite of her promise to help. They were allowed to commemorate their services to Greece, appealing in a most moving speech to the sacred ground of their city, the scene of the immortal battle. All was in vain. The Thebans accused them of flat treachery to Boeotia, securing their condemnation. Corcyra similarly proved unprofitable; it was afflicted by fratricidal dissensions which coloured one of Thucydides' darkest pictures. As the war went on it became clearer that it was a struggle between two rival political creeds, democracy and oligarchy. To the partisans all other ties were of little value, whether of blood or race or religion; only frenzied boldness and unquestioning obedience to a party organisation were of any consequence. This wretched spirit of feud was destined in the long run to spell the doom of the Greek cities. In 427 the first mention was made of the will-of-the-wisp which in time led Athens to her ruin. In her anxiety to intercept the Peloponnesian corn she supported Leontini against Syracuse, the leading Sicilian state. In Acarnania the capable general Demosthenes after a series of movements not quite fruitless succeeded in bringing peace to the jarring mountain tribes.