Erasers erase and delete words from paper
lead in the form of words gone
gone at the hands of a piece of rubber
and no one will ever know
what the words once said
either the key to the universe
or the scribbling of a kindergartener
about the monsters under his bed

but written in pen
are words carved in stone
for erasers are useless against ink

pencils are light
without weight, like a feather
temporary
but pens are boulders
heavy and permanent