Homer and Shakespeare and Milton and Marvell and Wordsworth are but the rustling of leaves and crackling of twigs in the forest, and there is not yet the sound of any bird. The Muse has never lifted up her voice to sing.
Henry David Thoreau (1817–1862), U.S. philosopher, author, naturalist. A Week on the Concord and Merrimack Rivers (1849), in The Writings of Henry David Thoreau, vol. 1, p. 328, Houghton Mifflin (1906).