We can see that Mr White is satisfied with his life and thinks that he has in his life all that he needs. He can wish for anything yet he doesn't know what to wish for because he's got everything that he deems that he needs.
C.Frankenstein's detailed account of his emotions after creating the monster.
Romantic literature has this unique characteristic in which the focus goes to the narrator or the character emotions, describing an inner world that was often overlooked by previous authors. By going deep into Frankensteins emotions Mary Shelly gives the romantic characteristic to the story.