The Soul unto itself
Is an imperial friend --
Or the most agonizing Spy --
An Enemy --could send --.
Source: The Complete Poems of Emily Dickinson, no. 683, ed. Thomas H. Johnson, 1955.
-- Emily Dickinson, (Dec 10 1830-1886), US poet; She was a reclusive stylist who combined spare lyricism with unorthodox diction.