The name of the remarkable Austrian biologist and philosopher, Nobel Prize winner Konrad Lorenz (1903-1989), his books about animals are known all over the world and are well known to our readers. This publication contains the works of Lorenz, in which he tries to find an answer to the most pressing problems of social life, to problems of a global nature that modern humanity faces, as well as to identify the deep roots of human behavior and the process of human cognition that unite us with “ lesser brothers." Two of Lorenz's three works included in the book are being published in Russian for the first time. The publication is addressed to a wide range of readers.