The book "Principal questions of quantum mechanics" by D. and . Blokhintseva is a fascinating and deep dive into the world of quantum physics, which will not leave indifferent any lover of science. In this work, the author, known for his outstanding research in theoretical physics, seeks to explain the complex concepts of quantum mechanics in accessible language, focusing on the fundamental issues that concern scientists and students over the years. Quantum mechanics is not just a branch of physics, it is a whole world in which Blokhintsev invites the reader. The book covers the main aspects of quantum theory, ranging from historical presuppositions to modern interpretations. The author examines such fundamental issues as the nature of quantum superposition, the measurement problem and the role of the observer in quantum processes. Each chapter is riddled with intriguing examples and paradoxes that make us think about how we perceive reality. This book will be interesting not only for students and graduate students of physics, but also for anyone who wants to understand the nature of matter and light more deeply. If you are interested in science, philosophy or just want to expand your horizons, “Principal questions of quantum mechanics” will be a real discovery for you. Blokhintsev writes with such passion and clarity that even complex topics become understandable and fascinating. His style of presentation combines scientific rigor with accessibility, making the book ideal for a wide audience. The topics raised in the book go beyond purely scientific questions. Blokhintsev touches on the philosophical aspects of quantum mechanics, discussing how these ideas affect our understanding of the world and the place of man in it. He raises important questions about determinism and randomness, about how quantum mechanics changes our understanding of time and space. These reflections make the book not only a textbook, but also a philosophical treatise that makes the reader think about the deeper aspects of existence. D. and . Blokhintsev is the author of many scientific papers and articles, and his contribution to physics is difficult to overestimate. His previous works, such as Quantum Mechanics for Beginners and Particle Physics, have also been recognized for their accessibility and depth of presentation. In "Principal Questions of Quantum Mechanics" he continues his tradition, offering readers not only knowledge but also inspiration for further study of science. The book will be useful both for those who are just beginning to get acquainted with quantum mechanics, and for experienced specialists who want to refresh their knowledge and look at familiar things from a new perspective. It can be a great addition to training courses, as well as a source of ideas for discussion and research. If you are looking for literature that combines scientific rigor and philosophical depth, "Principal Questions of Quantum Mechanics" D. and . Blokhintseva is exactly what you need. Immerse yourself in the world of quantum physics and discover new horizons of understanding reality!