ISBN-13: 9780393328813 / Angielski / Miękka / 2006 / 128 str.
Ridley concentrates on understanding Darwin's most important books, On the Origin of Species and The Descent of Man, but he also examines a sample from one of Darwin's other works on the emotions, as one representative from Darwin's lesser-known works that ranged from flower pollination to coral reefs, from animal domestication to landscaping by earthworms.