Songs of Innocence, and Songs of Experience The Marriage of Heaven and Hell Once a dream did weave a shade O'er my angel guarded bed, That an emmet lost its way Where on grass methought I lay. Troubled, wildered, and forlorn, Dark, benighted, travel-worn, Over many a tangled spray, All heart broke, I heard her say: 'O my children! do they cry, Do they hear their father sigh? Now they look abroad to see, Now return and weep for me.