Philosophy, art, democracy, language, even computers--the glories of Greek civilization have shaped our world even more profoundly than we realize. Pericles and the Parthenon may be familiar, but what of Epaminondas, the Theban general who saved the Greek world from Spartan tyranny? Alexander the Great's fame has rolled down the centuries, but the golden Hellenistic Age that followed is largely forgotten. "Byzantine" conjures decadence and deadly...