In "The Lowland," Jhumpa Lahiri explores the theme of optimism regarding the future. The characters in the novel often have faith that their dreams and aspirations will come to fruition, reflecting a common human tendency to believe in a favorable outcome. This trust highlights the innate desire for stability and progress in life.

However, this idealism can lead to disillusionment when faced with unexpected challenges and realities. Lahiri illustrates the complexities of life where expectations do not always align with reality, prompting readers to reflect on their own beliefs about the future and the unpredictability that accompanies it.