Recollections of Richard F. Fuller
p93“one who had bid me not only to 'hope on, hope ever,' but to always strive to believe in the great reward and to be impelled by the best ambition.”
Fuller, Richard Frederick. Recollections of Richard F. Fuller. Boston: privately printed, 1936.
Inferred Richard Fuller quotes Fuller as having 'bid' him to 'hope on, hope ever' — this is Richard recording Margaret's direct speech/exhortation to him. The phrase is the exact title of Mary Botham Howitt's 1840 book Hope on! Or, The Boyhood of Felix Law (Boston: James Munroe and Company), well known in American literary circles by 1850.