This book explores the life, works, and lasting legacy of Joseph Conrad, the Polish-British novelist who is considered one of the most significant literary figures of the modernist movement. From his early years as a sailor to his eventual career as a writer, Conrad's experiences shaped his profound critiques of imperialism, existential doubt, and moral ambiguity. The analysis delves into his most renowned works, including Heart of Darkness, Lord Jim, Nostromo, and The Secret Agent, examining how his exploration of colonialism, the human psyche, and the ethical dilemmas of his characters influenced both his contemporaries and later generations of writers. The book also reflects on Conrad's narrative techniques, particularly his use of unreliable narrators, fragmented storytelling, and psychological depth, which set the stage for the modernist literary revolution. His enduring relevance is examined through the lens of postcolonial and existential thought, revealing how his work continues to resonate with contemporary readers. Ultimately, this book argues that Conrad's literary achievements and moral inquiries into the complexities of human nature, identity, and power ensure his place as a crucial figure in the history of world literature.