Ten days ago, I caught an evening train. I was running on empty, end-of-day, end-of-book, end-of-course; the sky was the gentlest blue. I could have sat in the carriage for days, for years; watched the flat green, the night fall, the street lamps alighting one-by-one, dots on the i's of the railroad towns. Slumped in my chair, I leant my head on the accordioned curtain, watched the passengers reading, caressing screens with idle fingers. On the station platform, a plump man stood on tiptoes and exchanged unheard words with the driver. We left, the women opposite giggled. A pretty girl with a spotty forehead gazed anxiously at her phone, hesitated as she read, chewed gum and tucked one arm around her waist, protectively. Everywhere was blue.