Perfection, seldom seen or heard
is similar to a rare bird.
It hides away from man and beast
and ripens lke the baker's yeast.
Improving on it asks for heat
a breath will do, its measure neat
and blown with gentleness upon
the miracle so oft withdrawn.
If you, my friend should catch a glimpse,
hold on before the sunshine dims
and guard with all you have inside
against the dark and stormy tide
when failings spring from man's sad mind
and he must leave it all behind.

Herbert Nehrlich

http://www.poemhunter.com/poem/perfection-49/