I thought to myself, they can't trade without using some kind of craft on that lot of fresh water—steamboats!
There's a great man named Kurtz! You should meet him.
The Voyage Upstream
On the Thames River, Marlow tells his story of his voyage into the Congo, also the Heart of Darkness.
When he first arrives in the Congo, he sees native Africans being used by the traders of the European Company to collect ivory. Being against the idea, the notable Kurtz is introduced, and Marlow is assigned to retrieve him.
The Climax - Kurtz's Death
The horror! The horror!
Marlow and his crew steam up the Congo River to find Kurtz. On their way, Marlow becomes more and more fond of Kurtz and his desperation to see him intensifies.
He was a great man
What did he say when he passed?
His last words were your name
Marlow sees Kurtz hut and realizes that he has chosen to break the morals of society. Kurtz is much more "savage" than those he witnessed earlier. Kurtz is also very ill and needs to be transported back to Europe.
In his final moments,, Kurtz makes out a moment of clarity regarding all the events of his life and lets out one final breath of words.
Having returned from Europe, Marlow visits Kurtz's fiance and lies when asked what his last words were. Upon a talk with a journalist, a friend of Kurtz, the journalist says that Kurtz very eloquent in speech.