Brilliant, hard-working, immensely productive and influential, the naturalist Richard Owen was a great promoter of science, and played a large role in shaping London's Natural History Museum. An often difficult and arrogant individual, he was accused of plagiarism and bullying, and is the only man whom Charles Darwin claimed to hate. Although strongly opposed to Darwin and Thomas Huxley's ideas on evolution through natural selection, there is evidence that a few of Owen's ideas were not so very distant from theirs. This biography gives an account of Owen's life and work, providing possible psychological and social reasons for some of his more controversial characteristics and his sometimes rather strained relations with his scientific contemporaries.