A dazzling collection of essays on how the best poems work, from the master poet and popular essayist Poetry, Jane Hirshfield has said, is language that foments revolutions of being. In ten eloquent and highly original explorations, she unfolds some of the ways this is done--by the inclusion of hiddenness, paradox, and surprise; by a perennial awareness of the place of uncertainty in our lives; by language's own acts of discovery; by the powers of image, statement, music, and feeling to enlarge in every direction. Closely reading poems by Dickinson, Bashō, Szymborska, Cavafy, Heaney, Bishop, and Komunyakaa, among others, Hirshfield reveals how poetry's world-making takes place: word by charged word. By expanding what is imaginable and sayable, Hirshfield proposes, poems expand what is possible. Ten Windows restores us at every turn to a more precise, sensuous, and deepened experience of our shared humanity and of the seemingly limitless means by which that knowledge is both summoned and forged.