The book “Ordinary Differential Equations” by Vladimir Igorevich Arnold is not just a textbook, but a real find for everyone who seeks to better understand the world of mathematical models and their applications. Arnold, an outstanding mathematician and popularizer of science, offers the reader a unique view of differential equations, which are the basis of many processes in the natural and social sciences. In this book, the author reveals the basic concepts and methods associated with ordinary differential equations, and does so with such clarity and enthusiasm that even complex topics become accessible to understanding. Arnold does not just expound a theory, he immerses the reader in the world of mathematical reflection, showing how these equations can describe real phenomena - from pendulum oscillations to population dynamics. The book will be of interest to students studying mathematics, physics and engineering, as well as practitioners seeking to refresh their knowledge or find new approaches to solving problems. It is suitable for readers of different ages - from high school students preparing for exams, to graduate students and professionals working in the scientific field. If you are passionate about mathematics, physics or engineering, then this book will be a real treasure for you. The topics raised in Ordinary Differential Equations cover a wide range: from basic concepts and decision methods to more complex topics such as decision stability and qualitative analysis. Arnold focuses on intuitive understanding, which allows the reader not only to remember the formulas, but also to realize how they work in the context of real-world problems. Its writing style combines rigor and accessibility, making the material easy to perceive. One of the features of the book is that Arnold uses many examples and tasks, which allows the reader to consolidate the knowledge gained in practice. He is not afraid to go into details, but he does it in such a way that even complex concepts become understandable. This makes the book not only a textbook, but also a fascinating reading for those who want to expand their horizons in mathematics. Arnold is the author of many other well-known works, such as Geometry and Algebra and Mathematical Methods of Classical Mechanics. His work is known for its depth and originality, and Ordinary Differential Equations is no exception. Readers familiar with his style will appreciate this book as well, which continues the tradition of clear and captivating presentation of complex mathematical topics. The book Ordinary Differential Equations will be a great addition to the library for anyone interested in mathematics and its applications. It inspires study, encourages reflection and opens up new horizons for understanding the world around us. If you are looking for a high-quality and deep manual on differential equations, this Arnold work will become your reliable companion in the world of mathematical discoveries.