The writing on the wall

Walls that divide and walls that protect
High Walls of pride you may fall from and risk your neck
Walls that conquer and walls that control
Walls where Willy Wonker nearly lost his soul
Walls of esteem and walls full of bullet holes
Walls that cut up mountains and block up streams
Walls whose only purpose is to break other's dreams
Walls full of murals or of protest
Walls that are cure-alls walls you come to detest
Walls you love pasted with posters
Walls of past lovers full of ears and ghost stories
The wolves in the walls
These four walls you stare at, at night
When the evening falls
You can talk you can whisper
You can shout you can scream
You can beat them with your fists or
You can scale them in your dreams
One thing is for sure
Behind every open door
They'll be a wall waiting for one and all