" The coincidences turn up down to the smallest details. There is, for instance, a character who has covered the mirrors with handkerchiefs. Apparently this happens somewhere in Ulysses, too. And they said, Ah! This is where he got that. Where I got it was when I was in a hotel in Panama and I had washed my handkerchiefs and spread them on the windows and the mirrors to dry—they almost look pressed when they’re peeled away that way—a Panamanian friend came in and said, “All the mirrors are covered. Who’s dead? What’s happened?” I said, “No, I’m just drying my handkerchiefs.” Then I found the same incident in McTeague in what? 1903 or 1905, whenever McTeague was written. This always strikes me as dangerous—finding “sources. "

― , The Paris Review Interviews, II: Wisdom from the World's Literary Masters