In Blackwater Woods by Mary Oliver

Look, the trees are turning their own bodies into pillars

of light, are giving off the rich fragrance of cinnamon and fulfillment,

the long tapers of cattails are bursting and floating away over the blue shoulders

of the ponds, and every pond, no matter what its name is, is

nameless now. Every year everything I have ever learned

in my lifetime leads back to this: the fires and the black river of loss whose other side

is salvation, whose meaning none of us will ever know. To live in this world

you must be able to do three things: to love what is mortal; to hold it

against your bones knowing your own life depends on it; and, when the time comes to let it go, to let it go.

— Devotions by Mary Oliver (Page 389 - 390)