Inside every man there is something of shadow and opposite representation. It is on the dark side that the animal hides. Behind the obligations of society and the mold offered by humanity exists a wild whisper of simplistic desire. Every man is a moon and every moon has two faces, one dark and one bright, one shown and one hidden. In Heart of Darkness the character Marlow travels into the depths of the Congo River to discover the evil in the id, in human nature. The novel Heart of Darkness uses imagery of light and darkness to show the ambiguity that obscures good and evil from definition, as it shows that in both spectrums there are many shades of gray. Africa is a land of savagery and Europe is a land of civilization, but each continent also contains special horrors. In “Heart of Darkness” Marlow refers to the company headquarters as the “White Sepulchre” to emphasize the fact that although the outside of imperialism may be shining, white, and righteous, the inside is full of hypocrisy and decadence. The phrase "Whitened Sepulchre" comes from the biblical book of Matthew: "For you are like whitened sepulchres, which outwardly appear beautiful, but within are full of dead men's bones and all manner of filthiness" (Matthew 23:27-28 ). The official mission behind which the company hides is the obligation to civilize and enlighten the natives, but in reality the work along the Congo River is purely profit-oriented. The methods adopted by the company to obtain its profits are savage and dehumanizing; they only cause the death and decay of white men and black natives. This dehumanization of the natives by colonialism reveals that within man there is something ancient and bestial that can be brought out of hiding once freed from society... at the center of the card... ultimately lost and trapped in dark savagery of Id.Kurtz's madness and brutality is a reflection of the evil that resides in the hearts of all men. The temptation of the forest, the dark side of human nature, has a strong power over Kurtz, so much so that he prefers to remain in primitive and wild Africa. He would prefer to be free from society and legal boundaries. For Kurtz “wild nature had patted him on the head, and behold, he was like a ball, an ivory ball; he had caressed it and... lo! It had withered; had taken him, embraced him, entered his veins, consumed his flesh, and sealed his soul to itself through the inconceivable ceremonies of some diabolical initiation” (Conrad, 1990, pg.76). Kurtz is the inner id. Marlow regards ferocity as a vice that exists with nature. The id exists in man and with it the potential for evil even in the best men.