"Those who read me know my conviction that the world, the tempered world rests, notably, on the idea of Fidelity."
This is a running theme through most Conrad's books. As a sailor he learned that to survive, every crewman did the job he was assigned, and that the survival of the ship, and therefore the community, depended on each man doing his duty.
The heart of darkness can be read as a political critique of western imperialism as exercised by the Belgians, who more or less raped the Congo of its resources while brutalizing the country's people and making them slaves of unbridled political avarice.
At the time Heart of Darkness was written, the British Empire was at its peak, and Britain controlled colonies and dependencies all over the planet. The popular saying that "the sun never sets on the British Empire" was literally true. The main topic of Heart of Darkness is imperialism, a nation's policy of exerting influence over other areas through military, political, and economic coercion. The first narrator expresses the mainstream belief that imperialism is a glorious and worthy enterprise. Indeed, in Conrad's time, "empire" was one of the central values of British subjects, the fundamental term through which Britain defined its identity and sense of purpose.
From the moment Marlow opens his mouth, he sets himself apart from his fellow passengers by conjuring up a past in which Britain was not the heart of civilization but the savage "end of the world." Marlow continues to talk of olden times when the Romans arrived and brought light, which even now is constantly flickering. He says those people were not colonists but conquerors, taking everything by brute force. This "taking of the earth is not a pretty thing" when examined too closely; it is the idea behind it which people find redeeming. The bitterness of Marlow's recollection demonstrates...