Yiasou is the Greek word for hello and goodbye, but you can’t credit the Greeks for inspiring Lennon and McCartney to write their single “Hello, Goodbye.” Instead you can give a shout-out to the Mediterranean country for giving us everything else – drama, philosophy, democracy and geometry. Why not celebrate the cornerstone of western civilization with live music, dancing and authentic cuisine like spanakopita, a savory spinach pie — not to be confused with Pi, which also came from the Greeks.