Ivan Sergeyevich Turgenev, "The Rule of Life", Poems in Prose, in his A Reckless Character and Other Stories, trans. Isabel F. Hapgood (1904), p. 317. This appeared in Time, March 5, 1951, p. 31, in a different translation: "If you desire to put your enemy in the wrong or even to damage his reputation, blame him for the very vice which you feel in yourself."https://en.wikiquote.org/wiki/Enemies