In Heart of Darkness, how does Marlow feel when he hears the tribesman howl and watches them dance?

In Section Two, when Marlow hears the "native howl and leap", the believes they are not all that different from himself. They seem to share some sort of "remote kinship". Then he says that if one is willing to admit that kinship, it is "ugly". Marlow then continues with the idea that man's mind must contain elements of both the past and the present. As he is thinking, he again says white men must face the truth about their past, and not try to eliminate it with "brute force" as the white colonialists are trying to do. One must accept the truth of the white man's connection to the natives and have the strength to face that truth