Africa, which they had somehow visualized as an extension of Europe -- an extension of terms, of references to a definitive past -- had already asserted itself as something different: a forbidding darkness where the croaking ravens matched the dry exclamations of spiritless men, and rationed laughter fashioned from breath simply the chattering of baboons. Sometimes they captured someone -- a solitary frightened man out hunting hares -- and were amazed to see that he was human like themselves.