A novella, Heart of Darkness is Joseph Conrad’s most famous work and a foundational text on the subject of colonialism. Heart of Darkness is based in part on a trip that Conrad took through modern-day Congo during his years as a sailor. He captained a ship that sailed down the Congo River. The story tells of Charles Marlow, an Englishman who took a foreign assignment from a Belgian trading company as a ferry-boat captain in Africa. Heart of Darkness exposes the myth behind colonization while exploring the three levels of darkness that the protagonist, Marlow, encounters--the darkness of the Congo wilderness, the darkness of the European's cruel treatment of the natives, and the unfathomable darkness within every human being for committing heinous acts of evil.