<human>:  What is the meaning of the title of the novel ‘The Picture of Dorian Gray’ by Lord Suckling?
<bot>: The title of the novel is a metaphor for the moral corruption of the main character, Dorian Gray. The novel is set in London and follows the life of Dorian Gray, a young man who is painted by the artist Basil Hallward. The painting is a portrait of Dorian Gray and as the story progresses, Dorian Gray's appearance slowly changes over time as he becomes more morally corrupt.