The book covers a wide range of topics, starting from the basic notions of particle physics and fields physics and gradually evolving to study macrophysics. Except of traditional issues the author considers subjects such as physical hydrodynamics, plasma physics, and astrophysics. The author widely applies the role of symmetry in physical laws, which allows to establish fundamental links in nature. The book is intended for high school students and graduates with a deep interest in physics, as well as for all those who wish to acquire a deeper knowledge of physical phenomena.