Here he is, on the Paris Metro:
"The Metro seemed very empty to me back then, particularly if I compare it to my trip to the races, when I was sick and alone. Even apart from the emptiness, the metro’s appearance showed the influence of a Sunday. The dark steel color of the walls dominated. The work of the conductors, shoving the doors of the cars open and shut and swinging themselves in and out, was in keeping with the spirit of a Sunday afternoon. People walked slowly along each long correspondence (i.e. transfer). The unnatural indifference of the passengers, their acceptance of this travel by Metro, became clearer. The way that people turned toward the glass doors, that individuals disembarked at unknown stations far from the opera, appeared capricious. Despite the elec. light, changes in the daylight are clearly visible in the stations, particularly when you have just gone down, particularly this afternoon light, just before dusk. "
From 99 Finds, first published in Germany in 2012 and forthcoming from New Directions on March 21 in a translation from the German by Kurt Beals.