George Bernard Shaw (2015). “The Collected Works of George Bernard Shaw: Plays, Novels, Articles, Lectures, Letters and Essays: Pygmalion, Mrs. Warren’s Profession, Candida, Arms and The Man, Man and Superman, Caesar and Cleopatra, Androcles And The Lion, The New York Times Articles on War, Memories of Oscar Wilde and more”, p.2451, e-artnow
An Essay on Criticism l. 525 (1711). The Oxford Dictionary of Proverbs notes, "Although known in Latin (humanum est errare, it is human to err) and in earlier English versions, this saying is generally quoted in Pope's words." The ODP cites "To offend is humaine, to repent diuine" (Henry Wotton, 1578) and "To erre is humane, to repent is divine" (James Howell, 1659).