"They howled, and leaped, and spun, and made horrid faces; but what thrilled you was just the thought of their humanity—like yours—the thought of your remote kinship with this wild and passionate uproar." Who is Marlow describing?
As he travels upriver, Marlowe finds himself talking about the native Africans along the river banks. He feels he can understand their howls and uproars and no longer thinks of them as "inhuman"
