Of primary interest in this chapter is the development of Dorian's character. Throughout the first three chapters, Lord Henry was the center of attention; Dorian was little more than a pretty face who envied his own portrait and was devoted to his mentor. In Chapter 4, however, Dorian begins to take over the novel. He comes into his own as a character, beginning to drive the plot of the story by acting independently of Lord Henry. His pronouncements, however, echo Lord Henry's, an indication that he is still very much under Lord Henry's influence. At least twice, the reader hears that an adage spoken by the protégé — Dorian — was originally spoken by the mentor — Lord Henry. However, Dorian's relationship with Sibyl Vane, superficial and immature as it may be, illustrates a burgeoning independence. It will soon lead to crisis and force more changes on the title character.
Dorian has not just fallen in love with an actress; he has fallen in love with her performances. He does not know the girl at all; yet, by the end of the chapter, they are engaged to be married. His ambition is not to build a relationship but to develop a star. If Dorian has learned nothing else from Lord Henry, he has learned the joy of manipulation. He wants to become Sibyl Vane's agent, not her husband. That Dorian's first love is so flawed with selfishness and manipulation is a bright indicator of the emerging dark side of his nature.
