Related:

• Halfway up the stairs is the stair where I sit, There isn't any other stair quite like it.
  It's not at the bottom, It's not at the top, but this is the stair where I always stop....
• At the first turning of the second stair I turned and saw below The same shape twisted on the banister .
  .. Under the vapour in the fetid air Struggling with the devil of the stairs who wears The deceitful face of hope and of despair....
• Yesterday upon the stair I met a man who wasn't there.
  He wasn't there again today -- I think he's from the CIA....
• As I was going up the stair I met a man who wasn't there.
  He wasn't there again today. I wish, I wish he'd stay away. -- Hughes Mearns, _The Psychoed_...
• Last night I met upon the stair A little man who wasn't there.
  He wasn't there again today. Gee how I wish he'd go away!...