Which work is authored by Joseph Conrad?

Joseph Conrad is best known for his novel "Heart of Darkness," which was first published in 1899. This novella explores themes of imperialism and the darkness inherent in human nature, as it follows the journey of Charles Marlow into the African Congo to find the enigmatic Mr. Kurtz. Conrad's unique narrative style and psychological depth have made this work a staple in literary studies and a critical examination of colonialism.

The other works mentioned are authored by different writers: "Pilgrim's Progress" is by John Bunyan, "Aeneid" is by Virgil, and "A Tale of Two Cities" is by Charles Dickens. Each of these works has its own significance in the literary canon, but they are distinct and separate from Conrad's contributions. Thus, "Heart of Darkness" stands out as the definitive work of Joseph Conrad.