In this book by English author Richard Dawkins, one of the modern approaches to the problem of evolution is presented. The biological foundations of behavior and its role in natural selection are examined. The book is distinguished by a brilliant, engaging style. The first edition was an international bestseller, translated into 13 languages, and is widely used around the world in teaching biology. This translation is made from the second, expanded edition. For specialists in the theory of evolution and sociobiology, biologists, and everyone interested in biology-related problems—and, in particular, in the biological foundations of behavior.