"In 1858, aged thirty-five, weak with malaria, isolated in the remote Spice Islands, Alfred Russel Wallace wrote to Charles Darwin: he had, he said excitedly, worked out a theory of natural selection. Darwin was aghast - his work of decades was about to be scooped. Within a fortnight, his outline and Wallace's paper were presented jointly in London. A year later, with Wallace still at the opposite side of the world, On the Origin of Species was published." "With vigour and sensitivity, Peter Raby reveals Wallace as a courageous and unconventional explorer. After his return, he plunged into a variety of controversies, staying vital and alert until his death at the age of 90, in 1913. Gentle, self-effacing, and remarkably free from the racism that blighted so many of his contemporaries, Wallace is one of the neglected giants of the history of science and ideas. This biography - the first for many years - puts him back at centre stage, where he belongs."--BOOK JACKET.