J.D. Lewis-Williams, one of the leading South African archaeologists and ethnographers, excavates meaning from the complex mythological stories of the San-Bushmen to create a larger theory of how myth is used in culture. He extracts their "nuggets," the far-reaching but often unspoken words and concepts of language and understanding that are opaque to outsiders, to establish a more nuanced theory of the role of these myths in the thought-world and...