In Swann's mind, however, these words, meeting no opposition, settled and hardened until they assumed the indestructibility of a truth so indubitable that, if some friend happened to tell him that he had come by the same train and had not seen Odette, Swann would have been convinced that it was his friend who had made a mistake as to the day or hour, since his version did not agree with the words uttered by Odette. These words had never appeared to him false except when, before hearing them, he had suspected that they were going to be. For him to believe that she was lying, and anticipatory suspicion was indispensable.
Marcel Proust, Swann's Way
lie, suspicion, truth