Summer on the Lakes, in 1843
“for Mariana had the kind of spirit, which, in a better cause, had made the Roman matron truly say of her death-wound, "It is not painful, Poetus.”
Fuller, Margaret. Summer on the Lakes, in 1843. Boston: Little, Brown & Co., 1844.
Inferred Fuller quotes the famous last words of Arria the Elder (wife of Caecina Paetus), who stabbed herself to show her condemned husband how to die bravely (AD 42), handing him the dagger and saying 'Paete, non dolet' ('It is not painful, Paetus'). The anecdote is preserved in Pliny the Younger, Letters III.16.