Because they already know that it means
stopping and without stopping they know that
beyond stopping it will mean listening
listening without hearing and maybe
then hearing without hearing and what would
they hear then what good would it be to them
like some small animal crossing the road
suddenly there but not seeming to move
at night and they are late and may be on
the wrong road over the mountain with all
the others asleep and not hitting it
that time as though forgetting it again
-W.S. Merwin (2009)