"When one door closes, another opens... into another room, another space, other happenings. There are many doors to open and close in our lives. Some doors we leave ajar, where we hope and plan to return. Some doors are slammed shut decisively—"No more of that!" Some are closed regretfully, softly—"It was good, but it is over." Departures entail arrivals somewhere else. Closing a door, leaving it behind, means opening onto new vistas and ventures, new possibilities, new incentives."