A central theme of the novel is alienation. Right from his birth, Mr Biswas is alienated due to the prophecy. He grew up as a lonely child who lived in isolation. Following his marriage to Shama, the joint family of the Tulsis expected him to merge his personal identity with theirs, which he finds difficult and makes him feel trapped. They later humiliate him and he is forced to work at the estate at Green Vale, where he grows resentful of even his own children. Ultimately, this sense of alienation motivates him to search for a house, symbolising an effort to find and create his own identity.[9]
Throughout the novel, Mr Biswas' gradual progress is indicated through the many objects he and his wife acquire over the years. Naipaul lists out detailed inventories, much like "the catalogue of ships in the Iliad or the many descriptions of rooms by Dickens".[10]
