“THE SLEEPER MUST AWAKEN.”On a banner trailing an airplane circling the South Shore Cultural Center in Chicago, this message read mysteriously to all who spied it in the soporific sunset heat, including those like me coming to the Renaissance Society’s first benefit under its new director Myriam Ben Salah and orchestrated under an impresario, the grandly sly Italian artist Piero Golia.After too many buses and trains from the airport, I walked through the deepening dusk under rounded terracotta arches alongside the long drive leading up to the front doors of the 1909 Mediterranean Revival former