Dim and wavering as was the wind-blown light, yet it served to show him the hideous error, as it seemed, into which he had fallen, for the face of the man he had sought to kill had all the bloom of boyhood, all the unstained purity of youth. He seemed little more than a lad of twenty summers, hardly older, if older indeed at all, than his sister had been when they had parted so many years ago. It was obvious that this was not the man who had destroyed her life.
– Oscar Wilde
The Picture of Dorian Gray, Chapter 16. A vengeful James Vane has tracked down Dorian with the intention of killing him. But when Dorian asks him to look at his face, James sees someone with the bloom and purity of youth and thinks that he is not the man he has been searching for all these years. Dorian’s youthful appearance, masking the evil lurking within him, has saved him.