When the wave, equally suddenly, retreated, it left a void which resembled that of the morning, yet had a character of its own, because though the pattern was repeated it was in reverse order: the scattered schoolchildren who passed my window now were on their way home and there was something unrestrained and boisterous about them, whereas when they had walked past on their way to school in the morning they still bore the silent imprint of sleep and the innate wariness we feel toward things that have not yet begun.
