“For the first 99.99999 per cent of our history as organisms, we were in the same ancestral line as chimpanzees. Virtually nothing is known about the prehistory of chimpanzees, but whatever they were, we were. Then, about seven million years ago, something major happened. A group of new beings emerged from the tropical forests of Africa and began to move about on the open savanna. These.”

“For the first 99.99999 per cent of our history as organisms, we were in the same ancestral line as chimpanzees. Virtually nothing is known about the prehistory of chimpanzees, but whatever they were, we were. Then, about seven million years ago, something major happened. A group of new beings emerged from the tropical forests of Africa and began to move about on the open savanna. These.”

— Bill Bryson