YESTERDAY, the whole world was watching Greece as its Parliament voted to pass a divisive package of austerity measures that could have critical ramifications for the global financial system. It may come as a surprise that this tiny tip of the Balkan Peninsula could command such attention. We usually think of Greece as the home of Plato and Pericles, its real importance lying deep in antiquity. But this is hardly the first time that to understand Europe’s future, you need to turn away from the big powers at the center of the continent and look closely at what is happening in Athens. For the past 200 years, Greece has been at the forefront of Europe’s evolution.