Financial crises are nothing new in Greece. Back in 354 BC, at a time when Frankfurt was still a swamp, the Athenian general Xenophon wrote a briefing paper designed to help his city negotiate the aftermath of a disastrous war. His proposals mixed supply-side reform with Keynesian stimulus. The regulatory powers of Athenian officials, so Xenophon suggested, should be streamlined and enhanced; simultaneously, the city should invest in increasing its commercial and housing stock.