The author examines the history of debate about Darwin's theory of evolution, focussing on particular dramas in the debate up to the present day, in an attempt to explain why the theory has caused such heated dissention among scientists, sociologists, and philosophers. He compares the various strains of doctrine competing for our allegiance, as well as locating the arguments in their philosophical and moral contexts. The book helps to uncover the motives of the participants, from creationists to sociologists.