He whom I enclose with my name is weeping in this dungeon.
I am ever busy building this wall all around; and as this wall goes up into
the sky day by day I lose sight of my true being in its dark shadow.

I take pride in this great wall, and I plaster it with dust and sand
lest a least hole should be left in this name;
and for all the care I take I lose sight of my true being.

Rabindranath Tagore

http://www.poemhunter.com/poem/dungeon/