An invisible moment...
During a recent visit to Paris I used the underground Metro travelling from one landmark to the next alongside the population of the city in their everyday life. The train had standing room only. As it accelerated into the depths of the city, I noticed passengers moving apart as if to allow an invisible person to pass by. Slowly the invisible person came into view - on the floor of the carriage was a man moving through the dust and grime pulling himself along using his hands, he had no legs, around his neck hung a piece of card explaining he had children to support.
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