The book "Magnetic Monopoles" by Yakov M. Shnir offers a comprehensive examination of one of the most fascinating concepts in theoretical physics: magnetic monopoles. It highlights the symmetry in nature and the role this symmetry plays in physical theory. The author discusses the challenges associated with the search for magnetic monopoles and the significance of this entity for our understanding of electric and magnetic forces. Through the analysis of broken symmetry in nature, the reader is introduced to the profound questions of physics that have shaped research for over a century. The book is suitable for both students and professionals who wish to engage with the fundamentals and current developments in theoretical physics.