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Charles Darwin, a British naturalist, revolutionized biology with his theory of evolution through the process of natural selection. Herbert Spencer was the major philosopher of biological and social evolution. Spencer's work significantly influenced 19th centur ....

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.... however, he transferred to Christ's College in Cambridge in order to become a clergyman. During this time he befriended a man of science, John Steven Henslow. It was Henslow who recommended him for the unpaid position of naturalist on the H.M.S. Beagle. Darwin set sail on December 27, 1831 to study the Pacific coast of South America and the Pacific Islands. His other duty was to set up navigation stations in the area. He also studied the geology and biology of these areas. Upon his return in 1839, Darwin married his cousin, Emma Wedgewood, and was admitted to the Royal Society. He moved to Downe, Kent in 1842, and was plagued by ill health unti ....