The sky began to tilt,
a shift of light toward the higher clouds,
so I seized my brush
and dipped my little cup in the stream,
but once I streaked the paper gray
with a hint of green,
water began to slide down the page,
rivulets looking for a river.
And again, I was too late --
then the sky made another turn,
this time as if to face a mirror
held in the outstretched arm of a god.
--Billy Collins, Aimless Love