His sudden mad love for Sibyl Vane was a psychological phenomenon of no small interest. There was no doubt that curiosity had much to do with it, curiosity and the desire for new experiences; yet it was not a simple but rather a very complex passion. What there was in it of the purely sensuous instinct of boyhood had been transformed by the workings of the imagination, changed into something that seemed to the lad himself to be remote from sense, and was for that very reason all the more dangerous.

– Oscar Wilde

The Picture of Dorian Gray, Chapter 4. Dorian has become an interesting study for Lord Henry, especially now that he has fallen in love. In this passage Henry thinks to himself about the young man’s sudden passion for the actress Sybyl Vane. Not a believer in longterm love himself, Henry puts Dorian’s love down to curiosity for life and for new experiences. He describes Dorian’s crazy passion for Sibyl as a complex and no simple matter, but also "dangerous," foreshadowing the tragic events to follow in the novel.