The publication of Darwin's The Origin of Species in 1859 marked a dramatic turning point in scientific thought. The volume had taken Darwin more than twenty years to publish, in part because he envisioned the storm of controversy it was certain to unleash. Indeed, selling out its first edition on its first day, The Origin of Species revolutionized science, philosophy, and theology. Darwin's reasoned, documented arguments carefully advance his theory...

Voyage of the Beagle chronicles Charles Darwin's five years as a naturalist on board the H.M.S. Beagle. The notes and observations that he recorded in his diary included Chile, Argentina and Galapagos Islands and encompasses the ecology, geology and anthropology of the places he visits. A fascinating travel memoir the ideas that were later to evolve into Darwin's theory of natural selection find their naissance in Voyage of the Beagle.

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Published in 1872, thirteen years after On the Origin of Species, The Expression of the Emotions in Man and Animals is devoted to documenting what Darwin believes is the genetically determined aspects of behavior. Together with The Descent of Man (1871), it sketches out Darwin's main thesis of human origins. Here he traces the animal origins of human characteristics such as pursing of the lips in concentration, tightening of the muscles around the...

This edition includes a modern introduction and a list of suggested further reading. Charles Darwin's Descent of Man and Selection in Relation to Sex (1871) was the single most important European or American nineteenth-century statement that man is an integral part of the animal kingdom. As a work of science, Descent of Man mattered more, and was more coherent, rigorous, and in tune with scientific opinion than that of any of its predecessors in evolutionary...