"My Heart Leaps Up", also known as "The Rainbow", is a poem by the British Romantic poet William Wordsworth. Noted for its simple structure and language, it describes joy felt at viewing a rainbow. Wordsworth wrote "My Heart Leaps Up" on the night of March 26, 1802. The day after he wrote "My Heart Leaps Up" Wordsworth began to write his more ambitious " Intimations of Immortality". The last three lines from "My Heart Leaps Up" are used as an epigraph to "Intimations of Immortality". Some scholars have noted that "My Heart Leaps Up" indicates Wordsworth's state of mind while writing the larger poem and provides clues to its interpretation.