Lines written in the days of growing darkness

Every year we have been
witness to it: how the
world descends

into a rich mash, in order that
it may resume.
And therefore
who would cry out

to the petals on the ground
to stay,
knowing, as we must,
how the vivacity of what was is married

to the vitality of what will be?
I don't say
it's easy, but
what else will do

if the love one claims to have for the world
be true?
So let us go on

though the sun be swinging east,
and the ponds be cold and black,
and the sweets of the year be doomed.

-- Mary Oliver, winner of the Pulitzer Prize and author, most recently, of "Swan: Poems and Prose Poems"