The book, written by a well-known theoretical physicist working in the field of elementary particles and string theory, is devoted to hypothetical symmetry between particles of matter and particles-carriers of interactions - supersymmetry. If experiments confirm that nature is indeed supersymmetric, then there is a new class of particles that have been called superparticles. From this book, the reader will learn how superparticles and supersymmetry will help scientists create a complete physical picture of the world. The final theory will not only describe all observed phenomena, but will also be able to answer the question of why the world is arranged in this way. Written in the genre of popular science literature, this publication does not require special training from the reader. For a wide range of readers interested in issues of the world order at the subatomic level.