"Kazz thought that putting a lump on Oskas’ head was very funny. He would have considered it to be even a better joke if the chief had drowned. Yet, among his crewmates, he was as sociable, tender, and compassionate a man as anyone could ask for. He was a primitive, and all primitives, civilized or preliterate, were tribal people. Only the tribe consisted of human beings and were treated as such. All outside the tribe though some might be considered friends, were not quite human. Therefore, they did not have to be treated as if they were completely human."