We share 99% of our genes with chimpanzees, and our relations with them epitomize both our kinship with and our alienation from the rest of the natural world. In this groundbreaking book, a brilliant writer and a great scientist paint an extraordinary portrait of chimps, humans, and our complex lives together since the 1600s, when Shakespeare created Caliban, neither man nor beast but "honored with a human shape". 8-page photo insert.