Pigeons shake their wings on the copper church roof
out my window across the street, a bird perched on the cross
surveys the city's blue-grey clouds. Larry Rivers
'll come at 10 AM and take my picture. I'm taking
your picture, pigeons. I'm writing you down, Dawn.
I'm immortalizing your exhaust, Avenue A bus.
O Thought, now you'll have to think the same thing forever!

Allen Ginsberg

http://www.poemhunter.com/poem/fourth-floor-dawn-up-all-night-writing-letters/