Some speculate about
 the edge of the universe,
  and what exists beyond.

But that edge - if it exists -
 is beyond another edge:
  the farthest points
   from which we can see light.

In a tower
 on a mountain,
  there's still an edge
   of our eyesight --
like the others,
 it's an edgeless edge, 
  signifying nothing 
   but our own limitations.

We are builders
 of edgeless edges,
  fashioning boundaries
   that don't bound anything,
    but by which we are bound.