He seemed to have forgotten all that he had gone through. A dim sense of having taken part in some strange tragedy came to him once or twice, but there was the unreality of a dream about it.
– Oscar Wilde
The Picture of Dorian Gray, Chapter 8. Having seen what appeared to be the altered portrait with its "look of evil where there had been a look of joy," Dorian wonders had he just imagined it. To him it was like an unreal dream.