The sad-sweet months when they trekked through Europe, those hot nights when they made love inside a canvas tent or the untimely death of a mother an ocean away?
Nature, love, poetry, art, old snapshots, a seance that scared them so many years ago or that draft of an old will found in a long-forgotten trunk in the attic?
Maybe they'll set aside their memories and tasks, let nostalgia drift away like an absentminded ghost or uninvited guest.
All their energies should rise to a final nervous pitch when they raise their glasses high and wet their arid lips.