the walls I can't find, but can't hide, either.

Up a narrow flight of stairs
In a narrow little room,
As I lie upon my bed
In the early evening gloom.
Impaled on my wall
My eyes can dimly see
The pattern of my life
And the puzzle that is me.

From the moment of my birth
To the instant of my death,
There are patterns I must follow
Just as I must breathe each breath.
Like a rat in a maze
The path before me lies,
And the pattern never alters
Until the rat dies.

Simon and Garfunkel, 1966.