From The Road to Kedarnath:

"Rarely do doors slam shut

The door inches to the jamb and is ignored.

The light still comes through.

But slowly and surely the door inches forward

A little less light every day

And still no one notices

Until one day the door seals the pathway

and no more light comes through

The dark becomes our place

The dark becomes our soul

Soon we forget that open doors exist

and light shines through them"