First of all, it can be easily seen that Kurtz was greed extremely. He had a strong desire for ivory. All of what he thought was ivory. Marlow had said Kurtz's body is made up of ivory. He always said:“My intended, my station, my career, my ideas.” But the reason why he was so greed is that he could not control his desire. It means he lacked restraint in the gratification of his various lusts. On the other hand, he had the power to charm or frighten rudimentary souls into an aggravated witch-dance in his honour. His ascendancy was extraordinary. Because the camps of these people surrounded the place, and the chiefs came every day to see him. Due to the savagery that the natives of the Congo revered him as a godlike being, he become savage and fanatical during the years he lived in jungle.
It is apparent that Marlow felt he and Kurtz shared a similar passion for the wilderness. Marlow has said he is Mr. Kurtz's friend in a way as well as the foundations of their intimacy were being laid—to endure—to endure—even to the end—even beyond. In another word, both of them separate themselves from the society which is composed of butcher, policeman, manager, brick-maker and so on. They entered into another society with ivory, savage, conquest, massacres, blessings as well as darkness. They were parallel to each other and that is why Marlow and Kurtz are the only two people in the novel who are addressed by their actual names.