The letters presented here-more than 3000-offer an extraordinary panorama of the fast-changing world of the nineteenth century. Poignant and powerful, they offer a moving commentary on issues at the heart of our own concerns, from global environmental change to the effects of science on religious belief. Reprinted for the first time in paperback, these eight volumes present the definitive text of all known letters to and from Darwin during the first half-century of his remarkable life, including the Beagle voyage and the great public debates on his evolutionary theory. Per volume, in original shrinkwrap, never opened.