The book "On the usefulness of improving natural knowledge" by Thomas Henry Huxley is an important scientific work that highlights the importance of science and the importance of its development for society. The author examines the question of the benefits and advantages of increasing scientific knowledge for humanity, emphasizing the need for advancement in science for the further development of society. The book is distinguished by clear argumentation, deep analysis and vivid expression of ideas, which makes it interesting for a wide range of readers, regardless of their scientific training. Huxla's work encourages us to think about the importance of science in human life and the development of civilization in general.