Poem in Your Pocket Day

It may not look like one, but here's a poem I found at Poets.org.
Language
by W. S. Merwin

Certain words now in our knowledge we will not use again, and we will never forget them. We need them. Like the back of the picture. Like our marrow, and the color in our veins. We shine the lantern of our sleep on them, to make sure, and there they are, trembling already for the day of witness. They will be buried with us, and rise with the rest.

From The Book of Fables by W.S. Merwin. Copyright © 2007 by W.S. Merwin. Reprinted by permission of Copper Canyon Press.