"My Heart Leaps Up When I Behold" l. 1 (1807). Wordsworth also used the last three lines as the epigraph for his poem "Ode: Intimations of Immortality from Recollections of Early Childhood" (1807). See Milton 43
Robert Browning, Elizabeth Barrett Browning (2009). “The Letters of Robert Browning and Elizabeth Barrett Browning: 1845-1846”, p.59, The Floating Press