Examples of duality in Chapter One?

The well-known basic theme of the novel surrounds the duality of good and evil, but also provides an examination of hypocrisy, as encompassed by Jekyll and Hyde. The book has been referred to as, "one of the best guidebooks of the Victorian times," because of its piercing description of the fundamental dichotomy of the 19th century ­ outward respectability and inward lust. Hyde's first victim of cruelty is a female child, which serves to immediately emphasize his moral depravity. The description of the fateful street where Hyde lives reinforces this theme of duality in Victorian culture. It is described as an anonymous street in London, whose shop fronts "like rows of smiling women" have a brightness that stands out in contrast to the dingy neighborhood. And yet, two doors from the corner stands a dreary, Gothic house, which, "bore in every feature the marks of prolonged and sordid negligence." Later on, we learn that Hyde's mysterious, threatening and sinister door and dilapidated building facade is in fact a back entrance to Dr. Jekyll's wealthy, respected, and large mansion. The theme of duality is also marked by the symbolic nature of the name, Hyde, which represents the hidden aspects of Jekyll's nature. Indeed, when resolving to find and speak with this man in Chapter 2, Mr. Utterson claims that "If he shall be Mr. Hyde . . . I shall be Mr. Seek."