Canada Month, June 1963. A later satirical version of this saying added to the end "Luckily, this is not difficult" (Paul Dickson, The Official Rules [1978]). See Eleanor Roosevelt 2
"Champion of her Sex - Miss Susan B. Anthony Tells the Story of her Remarkable Life to 'Nellie Bly'". Susan B. Anthony and Nellie Bly, New York World (p. 10), February 2, 1896.
Nathaniel Hawthorne (2015). “Complete Novels of Nathaniel Hawthorne (Illustrated Edition): Fanshawe, The Scarlet Letter with its Adaptation, The House of the Seven Gables, The Blithedale Romance, The Marble Faun, The Dolliver Romance, Septimius Felton, Grimshawe's Secret and Biography”, p.780, e-artnow