Without reflection, without mercy, without  shame,
they built strong walls and high, and  compassed me about.

And now I sit here and consider and despair.

My brain is worn with meditating on my fate:
I had outside so many things to terminate.

Oh! why when they were building did I not beware!

But never a sound of building, never an echo came.
Out of the world, insensibly, they shut me out.

(“Walls” Poem by C. P. Cavafy)