"Grecian profile" carries symbolic and cultural significance. The reference to Greek aesthetics invokes classical ideals of beauty and proportion, suggesting that St. John embodies qualities associated with ancient Greek culture and art. St. John's physical appearance may also serve to contrast him with other characters in the novel. By highlighting his tall stature, fair complexion, and Grecian profile, the quote distinguishes St. John from other characters and suggests that he possesses a unique and noteworthy presence within the story.